Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: pwc : do not pass stack allocated buffers to USB core.
  USB: otg: Fix bug on remove path without transceiver
  USB: correct error handling in cdc-wdm
  USB: removal of tty->low_latency hack dating back to the old serial code
  USB: serial: sierra driver bug fix for composite interface
  USB: gadget: omap_udc uses platform_driver_probe()
  USB: ci13xxx_udc: fix build error
  USB: musb: Prevent multiple includes of musb.h
  USB: pass mem_flags to dma_alloc_coherent
  USB: g_file_storage: fix use-after-free bug when closing files
  USB: ehci-sched.c: EHCI SITD scheduling bugfix
  USB: fix mos7840 problem with minor numbers
  USB: mos7840: add new device id
  USB: musb: fix build when !CONFIG_PM
  USB: musb: Remove my email address from few musb related drivers
  USB: Gadget: MIPS CI13xxx UDC bugfixes
  USB: Unusual Device support for Gold MP3 Player Energy
  USB: serial: fix lifetime and locking problems

32 files changed, 314 insertions, 271 deletions

diff --git a/drivers/media/video/pwc/pwc-ctrl.c b/drivers/media/video/pwc/pwc-ctrl.c
index f9fbe02e0f69..50b415e07eda 100644
--- a/drivers/media/video/pwc/pwc-ctrl.c
+++ b/drivers/media/video/pwc/pwc-ctrl.c
@@ -159,35 +159,67 @@ static void pwc_set_image_buffer_size(struct pwc_device *pdev);
 
 /****************************************************************************/
 
+static int _send_control_msg(struct pwc_device *pdev,
+	u8 request, u16 value, int index, void *buf, int buflen, int timeout)
+{
+	int rc;
+	void *kbuf = NULL;
+
+	if (buflen) {
+		kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
+		if (kbuf == NULL)
+			return -ENOMEM;
+		memcpy(kbuf, buf, buflen);
+	}
 
-#define SendControlMsg(request, value, buflen) \
-	usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), \
-		request, \
-		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
-		value, \
-		pdev->vcinterface, \
-		&buf, buflen, 500)
+	rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
+		request,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		kbuf, buflen, timeout);
 
-#define RecvControlMsg(request, value, buflen) \
-	usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), \
-		request, \
-		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
-		value, \
-		pdev->vcinterface, \
-		&buf, buflen, 500)
+	kfree(kbuf);
+	return rc;
+}
 
+static int recv_control_msg(struct pwc_device *pdev,
+	u8 request, u16 value, void *buf, int buflen)
+{
+	int rc;
+	void *kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
+
+	if (kbuf == NULL)
+		return -ENOMEM;
+
+	rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
+		request,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		pdev->vcinterface,
+		kbuf, buflen, 500);
+	memcpy(buf, kbuf, buflen);
+	kfree(kbuf);
+	return rc;
+}
 
-static int send_video_command(struct usb_device *udev, int index, void *buf, int buflen)
+static inline int send_video_command(struct pwc_device *pdev,
+	int index, void *buf, int buflen)
 {
-	return usb_control_msg(udev,
-		usb_sndctrlpipe(udev, 0),
+	return _send_control_msg(pdev,
 		SET_EP_STREAM_CTL,
-		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 		VIDEO_OUTPUT_CONTROL_FORMATTER,
 		index,
 		buf, buflen, 1000);
 }
 
+static inline int send_control_msg(struct pwc_device *pdev,
+	u8 request, u16 value, void *buf, int buflen)
+{
+	return _send_control_msg(pdev,
+		request, value, pdev->vcinterface, buf, buflen, 500);
+}
+
 
 
 static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
@@ -224,7 +256,7 @@ static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
 		return -EINVAL;
 
 	memcpy(buf, pEntry->mode, 3);
-	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);
+	ret = send_video_command(pdev, pdev->vendpoint, buf, 3);
 	if (ret < 0) {
 		PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);
 		return ret;
@@ -285,7 +317,7 @@ static int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, i
 	memcpy(buf, pChoose->mode, 13);
 	if (snapshot)
 		buf[0] |= 0x80;
-	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 13);
+	ret = send_video_command(pdev, pdev->vendpoint, buf, 13);
 	if (ret < 0)
 		return ret;
 
@@ -358,7 +390,7 @@ static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, i
 		buf[0] |= 0x80;
 
 	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
-	ret = send_video_command(pdev->udev, 4 /* pdev->vendpoint */, buf, 12);
+	ret = send_video_command(pdev, 4 /* pdev->vendpoint */, buf, 12);
 	if (ret < 0)
 		return ret;
 
@@ -530,7 +562,8 @@ int pwc_get_brightness(struct pwc_device *pdev)
 	char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	return buf;
@@ -545,7 +578,8 @@ int pwc_set_brightness(struct pwc_device *pdev, int value)
 	if (value > 0xffff)
 		value = 0xffff;
 	buf = (value >> 9) & 0x7f;
-	return SendControlMsg(SET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
 }
 
 /* CONTRAST */
@@ -555,7 +589,8 @@ int pwc_get_contrast(struct pwc_device *pdev)
 	char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_LUM_CTL, CONTRAST_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	return buf;
@@ -570,7 +605,8 @@ int pwc_set_contrast(struct pwc_device *pdev, int value)
 	if (value > 0xffff)
 		value = 0xffff;
 	buf = (value >> 10) & 0x3f;
-	return SendControlMsg(SET_LUM_CTL, CONTRAST_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
 }
 
 /* GAMMA */
@@ -580,7 +616,8 @@ int pwc_get_gamma(struct pwc_device *pdev)
 	char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_LUM_CTL, GAMMA_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	return buf;
@@ -595,7 +632,8 @@ int pwc_set_gamma(struct pwc_device *pdev, int value)
 	if (value > 0xffff)
 		value = 0xffff;
 	buf = (value >> 11) & 0x1f;
-	return SendControlMsg(SET_LUM_CTL, GAMMA_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
 }
 
 
@@ -613,7 +651,8 @@ int pwc_get_saturation(struct pwc_device *pdev, int *value)
 		saturation_register = SATURATION_MODE_FORMATTER2;
 	else
 		saturation_register = SATURATION_MODE_FORMATTER1;
-	ret = RecvControlMsg(GET_CHROM_CTL, saturation_register, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = (signed)buf;
@@ -636,7 +675,8 @@ int pwc_set_saturation(struct pwc_device *pdev, int value)
 		saturation_register = SATURATION_MODE_FORMATTER2;
 	else
 		saturation_register = SATURATION_MODE_FORMATTER1;
-	return SendControlMsg(SET_CHROM_CTL, saturation_register, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
 }
 
 /* AGC */
@@ -651,7 +691,8 @@ int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
 	else
 		buf = 0xff; /* fixed */
 
-	ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	ret = send_control_msg(pdev,
+		SET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
 
 	if (!mode && ret >= 0) {
 		if (value < 0)
@@ -659,7 +700,8 @@ int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
 		if (value > 0xffff)
 			value = 0xffff;
 		buf = (value >> 10) & 0x3F;
-		ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+		ret = send_control_msg(pdev,
+			SET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
 	}
 	if (ret < 0)
 		return ret;
@@ -671,12 +713,14 @@ int pwc_get_agc(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 
 	if (buf != 0) { /* fixed */
-		ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+		ret = recv_control_msg(pdev,
+			GET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
 		if (ret < 0)
 			return ret;
 		if (buf > 0x3F)
@@ -684,7 +728,8 @@ int pwc_get_agc(struct pwc_device *pdev, int *value)
 		*value = (buf << 10);
 	}
 	else { /* auto */
-		ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1);
+		ret = recv_control_msg(pdev,
+			GET_STATUS_CTL, READ_AGC_FORMATTER, &buf, sizeof(buf));
 		if (ret < 0)
 			return ret;
 		/* Gah... this value ranges from 0x00 ... 0x9F */
@@ -707,7 +752,8 @@ int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
 	else
 		buf[0] = 0xff; /* fixed */
 
-	ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1);
+	ret = send_control_msg(pdev,
+		SET_LUM_CTL, SHUTTER_MODE_FORMATTER, &buf, sizeof(buf));
 
 	if (!mode && ret >= 0) {
 		if (value < 0)
@@ -726,7 +772,9 @@ int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
 			buf[0] = value >> 8;
 		}
 
-		ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2);
+		ret = send_control_msg(pdev,
+			SET_LUM_CTL, PRESET_SHUTTER_FORMATTER,
+			&buf, sizeof(buf));
 	}
 	return ret;
 }
@@ -737,7 +785,8 @@ int pwc_get_shutter_speed(struct pwc_device *pdev, int *value)
 	unsigned char buf[2];
 	int ret;
 
-	ret = RecvControlMsg(GET_STATUS_CTL, READ_SHUTTER_FORMATTER, 2);
+	ret = recv_control_msg(pdev,
+		GET_STATUS_CTL, READ_SHUTTER_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = buf[0] + (buf[1] << 8);
@@ -764,7 +813,9 @@ int pwc_camera_power(struct pwc_device *pdev, int power)
 		buf = 0x00; /* active */
 	else
 		buf = 0xFF; /* power save */
-	return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER,
+		&buf, sizeof(buf));
 }
 
 
@@ -773,20 +824,20 @@ int pwc_camera_power(struct pwc_device *pdev, int power)
 
 int pwc_restore_user(struct pwc_device *pdev)
 {
-	char buf; /* dummy */
-	return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0);
+	return send_control_msg(pdev,
+		SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, NULL, 0);
 }
 
 int pwc_save_user(struct pwc_device *pdev)
 {
-	char buf; /* dummy */
-	return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0);
+	return send_control_msg(pdev,
+		SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, NULL, 0);
 }
 
 int pwc_restore_factory(struct pwc_device *pdev)
 {
-	char buf; /* dummy */
-	return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0);
+	return send_control_msg(pdev,
+		SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, NULL, 0);
 }
 
  /* ************************************************* */
@@ -814,7 +865,8 @@ int pwc_set_awb(struct pwc_device *pdev, int mode)
 
 	buf = mode & 0x07; /* just the lowest three bits */
 
-	ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+	ret = send_control_msg(pdev,
+		SET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
 
 	if (ret < 0)
 		return ret;
@@ -826,7 +878,8 @@ int pwc_get_awb(struct pwc_device *pdev)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
 
 	if (ret < 0)
 		return ret;
@@ -843,7 +896,9 @@ int pwc_set_red_gain(struct pwc_device *pdev, int value)
 		value = 0xffff;
 	/* only the msb is considered */
 	buf = value >> 8;
-	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
+		&buf, sizeof(buf));
 }
 
 int pwc_get_red_gain(struct pwc_device *pdev, int *value)
@@ -851,7 +906,9 @@ int pwc_get_red_gain(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
+		&buf, sizeof(buf));
 	if (ret < 0)
 	    return ret;
 	*value = buf << 8;
@@ -869,7 +926,9 @@ int pwc_set_blue_gain(struct pwc_device *pdev, int value)
 		value = 0xffff;
 	/* only the msb is considered */
 	buf = value >> 8;
-	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
+		&buf, sizeof(buf));
 }
 
 int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
@@ -877,7 +936,9 @@ int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
+		&buf, sizeof(buf));
 	if (ret < 0)
 	    return ret;
 	*value = buf << 8;
@@ -894,7 +955,8 @@ static int pwc_read_red_gain(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = buf << 8;
@@ -906,7 +968,8 @@ static int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = buf << 8;
@@ -920,7 +983,8 @@ static int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
 
 	/* useful range is 0x01..0x20 */
 	buf = speed / 0x7f0;
-	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
 }
 
 static int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
@@ -928,7 +992,8 @@ static int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = buf * 0x7f0;
@@ -942,7 +1007,8 @@ static int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
 
 	/* useful range is 0x01..0x3F */
 	buf = (delay >> 10);
-	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
 }
 
 static int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
@@ -950,7 +1016,8 @@ static int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*value = buf << 10;
@@ -978,7 +1045,8 @@ int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
 	buf[0] = on_value;
 	buf[1] = off_value;
 
-	return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2);
+	return send_control_msg(pdev,
+		SET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
 }
 
 static int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
@@ -992,7 +1060,8 @@ static int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
 		return 0;
 	}
 
-	ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2);
+	ret = recv_control_msg(pdev,
+		GET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*on_value = buf[0] * 100;
@@ -1009,7 +1078,8 @@ int pwc_set_contour(struct pwc_device *pdev, int contour)
 		buf = 0xff; /* auto contour on */
 	else
 		buf = 0x0; /* auto contour off */
-	ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	ret = send_control_msg(pdev,
+		SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 
@@ -1019,7 +1089,8 @@ int pwc_set_contour(struct pwc_device *pdev, int contour)
 		contour = 0xffff;
 
 	buf = (contour >> 10); /* contour preset is [0..3f] */
-	ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+	ret = send_control_msg(pdev,
+		SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	return 0;
@@ -1030,13 +1101,16 @@ int pwc_get_contour(struct pwc_device *pdev, int *contour)
 	unsigned char buf;
 	int ret;
 
-	ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 
 	if (buf == 0) {
 		/* auto mode off, query current preset value */
-		ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+		ret = recv_control_msg(pdev,
+			GET_LUM_CTL, PRESET_CONTOUR_FORMATTER,
+			&buf, sizeof(buf));
 		if (ret < 0)
 			return ret;
 		*contour = buf << 10;
@@ -1055,7 +1129,9 @@ int pwc_set_backlight(struct pwc_device *pdev, int backlight)
 		buf = 0xff;
 	else
 		buf = 0x0;
-	return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
+		&buf, sizeof(buf));
 }
 
 int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
@@ -1063,7 +1139,9 @@ int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
 	int ret;
 	unsigned char buf;
 
-	ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
+		&buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*backlight = !!buf;
@@ -1078,7 +1156,8 @@ int pwc_set_colour_mode(struct pwc_device *pdev, int colour)
 		buf = 0xff;
 	else
 		buf = 0x0;
-	return SendControlMsg(SET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
 }
 
 int pwc_get_colour_mode(struct pwc_device *pdev, int *colour)
@@ -1086,7 +1165,8 @@ int pwc_get_colour_mode(struct pwc_device *pdev, int *colour)
 	int ret;
 	unsigned char buf;
 
-	ret = RecvControlMsg(GET_CHROM_CTL, COLOUR_MODE_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*colour = !!buf;
@@ -1102,7 +1182,8 @@ int pwc_set_flicker(struct pwc_device *pdev, int flicker)
 		buf = 0xff;
 	else
 		buf = 0x0;
-	return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
 }
 
 int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
@@ -1110,7 +1191,8 @@ int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
 	int ret;
 	unsigned char buf;
 
-	ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*flicker = !!buf;
@@ -1126,7 +1208,9 @@ int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise)
 	if (noise > 3)
 		noise = 3;
 	buf = noise;
-	return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
+		&buf, sizeof(buf));
 }
 
 int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
@@ -1134,7 +1218,9 @@ int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
 	int ret;
 	unsigned char buf;
 
-	ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+	ret = recv_control_msg(pdev,
+		GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
+		&buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	*noise = buf;
@@ -1146,7 +1232,8 @@ static int _pwc_mpt_reset(struct pwc_device *pdev, int flags)
 	unsigned char buf;
 
 	buf = flags & 0x03; // only lower two bits are currently used
-	return SendControlMsg(SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, 1);
+	return send_control_msg(pdev,
+		SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, &buf, sizeof(buf));
 }
 
 int pwc_mpt_reset(struct pwc_device *pdev, int flags)
@@ -1175,7 +1262,8 @@ static int _pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
 	buf[1] = (pan >> 8) & 0xFF;
 	buf[2] = tilt & 0xFF;
 	buf[3] = (tilt >> 8) & 0xFF;
-	return SendControlMsg(SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, 4);
+	return send_control_msg(pdev,
+		SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, &buf, sizeof(buf));
 }
 
 int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
@@ -1211,7 +1299,8 @@ static int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *st
 	int ret;
 	unsigned char buf[5];
 
-	ret = RecvControlMsg(GET_MPT_CTL, PT_STATUS_FORMATTER, 5);
+	ret = recv_control_msg(pdev,
+		GET_MPT_CTL, PT_STATUS_FORMATTER, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	status->status = buf[0] & 0x7; // 3 bits are used for reporting
@@ -1233,7 +1322,8 @@ int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
 	else
 		request = SENSOR_TYPE_FORMATTER2;
 
-	ret = RecvControlMsg(GET_STATUS_CTL, request, 1);
+	ret = recv_control_msg(pdev,
+		GET_STATUS_CTL, request, &buf, sizeof(buf));
 	if (ret < 0)
 		return ret;
 	if (pdev->type < 675)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 34e6108e1d42..0fe434505ac4 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -3,7 +3,7 @@
  *
  * This driver supports USB CDC WCM Device Management.
  *
- * Copyright (c) 2007-2008 Oliver Neukum
+ * Copyright (c) 2007-2009 Oliver Neukum
  *
  * Some code taken from cdc-acm.c
  *
@@ -610,7 +610,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	if (!buffer)
 		goto out;
 
-	while (buflen > 0) {
+	while (buflen > 2) {
 		if (buffer [1] != USB_DT_CS_INTERFACE) {
 			dev_err(&intf->dev, "skipping garbage\n");
 			goto next_desc;
@@ -646,16 +646,18 @@ next_desc:
 	spin_lock_init(&desc->iuspin);
 	init_waitqueue_head(&desc->wait);
 	desc->wMaxCommand = maxcom;
+	/* this will be expanded and needed in hardware endianness */
 	desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber);
 	desc->intf = intf;
 	INIT_WORK(&desc->rxwork, wdm_rxwork);
 
-	iface = &intf->altsetting[0];
+	rv = -EINVAL;
+	iface = intf->cur_altsetting;
+	if (iface->desc.bNumEndpoints != 1)
+		goto err;
 	ep = &iface->endpoint[0].desc;
-	if (!ep || !usb_endpoint_is_int_in(ep)) {
-		rv = -EINVAL;
+	if (!ep || !usb_endpoint_is_int_in(ep))
 		goto err;
-	}
 
 	desc->wMaxPacketSize = le16_to_cpu(ep->wMaxPacketSize);
 	desc->bMaxPacketSize0 = udev->descriptor.bMaxPacketSize0;
@@ -711,12 +713,19 @@ next_desc:
 
 	usb_set_intfdata(intf, desc);
 	rv = usb_register_dev(intf, &wdm_class);
-	dev_info(&intf->dev, "cdc-wdm%d: USB WDM device\n",
-		 intf->minor - WDM_MINOR_BASE);
 	if (rv < 0)
-		goto err;
+		goto err3;
+	else
+		dev_info(&intf->dev, "cdc-wdm%d: USB WDM device\n",
+			intf->minor - WDM_MINOR_BASE);
 out:
 	return rv;
+err3:
+	usb_set_intfdata(intf, NULL);
+	usb_buffer_free(interface_to_usbdev(desc->intf),
+			desc->bMaxPacketSize0,
+			desc->inbuf,
+			desc->response->transfer_dma);
 err2:
 	usb_buffer_free(interface_to_usbdev(desc->intf),
 			desc->wMaxPacketSize,
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index cadb2dc1d28a..3ba2fff71490 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -119,7 +119,7 @@ void *hcd_buffer_alloc(
 		if (size <= pool_max [i])
 			return dma_pool_alloc(hcd->pool [i], mem_flags, dma);
 	}
-	return dma_alloc_coherent(hcd->self.controller, size, dma, 0);
+	return dma_alloc_coherent(hcd->self.controller, size, dma, mem_flags);
 }
 
 void hcd_buffer_free(
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 22c65960c429..38e531ecae4d 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -51,6 +51,7 @@
  * - Gadget API (majority of optional features)
  * - Suspend & Remote Wakeup
  */
+#include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/dmapool.h>
 #include <linux/dma-mapping.h>
@@ -142,7 +143,7 @@ static struct {
 #define CAP_DEVICEADDR      (0x014UL)
 #define CAP_ENDPTLISTADDR   (0x018UL)
 #define CAP_PORTSC          (0x044UL)
-#define CAP_DEVLC           (0x0B4UL)
+#define CAP_DEVLC           (0x084UL)
 #define CAP_USBMODE         (hw_bank.lpm ? 0x0C8UL : 0x068UL)
 #define CAP_ENDPTSETUPSTAT  (hw_bank.lpm ? 0x0D8UL : 0x06CUL)
 #define CAP_ENDPTPRIME      (hw_bank.lpm ? 0x0DCUL : 0x070UL)
@@ -1986,6 +1987,8 @@ static int ep_enable(struct usb_ep *ep,
 	do {
 		dbg_event(_usb_addr(mEp), "ENABLE", 0);
 
+		mEp->qh[mEp->dir].ptr->cap = 0;
+
 		if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
 			mEp->qh[mEp->dir].ptr->cap |=  QH_IOS;
 		else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 5c030b080d4c..381a53b3e11c 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -738,7 +738,6 @@ static struct fsg_dev			*the_fsg;
 static struct usb_gadget_driver		fsg_driver;
 
 static void	close_backing_file(struct lun *curlun);
-static void	close_all_backing_files(struct fsg_dev *fsg);
 
 
 /*-------------------------------------------------------------------------*/
@@ -3593,12 +3592,10 @@ static int fsg_main_thread(void *fsg_)
 	fsg->thread_task = NULL;
 	spin_unlock_irq(&fsg->lock);
 
-	/* In case we are exiting because of a signal, unregister the
-	 * gadget driver and close the backing file. */
-	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags)) {
+	/* If we are exiting because of a signal, unregister the
+	 * gadget driver. */
+	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
 		usb_gadget_unregister_driver(&fsg_driver);
-		close_all_backing_files(fsg);
-	}
 
 	/* Let the unbind and cleanup routines know the thread has exited */
 	complete_and_exit(&fsg->thread_notifier, 0);
@@ -3703,14 +3700,6 @@ static void close_backing_file(struct lun *curlun)
 	}
 }
 
-static void close_all_backing_files(struct fsg_dev *fsg)
-{
-	int	i;
-
-	for (i = 0; i < fsg->nluns; ++i)
-		close_backing_file(&fsg->luns[i]);
-}
-
 
 static ssize_t show_ro(struct device *dev, struct device_attribute *attr, char *buf)
 {
@@ -3845,6 +3834,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
 		if (curlun->registered) {
 			device_remove_file(&curlun->dev, &dev_attr_ro);
 			device_remove_file(&curlun->dev, &dev_attr_file);
+			close_backing_file(curlun);
 			device_unregister(&curlun->dev);
 			curlun->registered = 0;
 		}
@@ -4190,7 +4180,6 @@ autoconf_fail:
 out:
 	fsg->state = FSG_STATE_TERMINATED;	// The thread is dead
 	fsg_unbind(gadget);
-	close_all_backing_files(fsg);
 	complete(&fsg->thread_notifier);
 	return rc;
 }
@@ -4284,7 +4273,6 @@ static void __exit fsg_cleanup(void)
 	/* Wait for the thread to finish up */
 	wait_for_completion(&fsg->thread_notifier);
 
-	close_all_backing_files(fsg);
 	kref_put(&fsg->ref, fsg_release);
 }
 module_exit(fsg_cleanup);
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 57d9641c6bf8..a2db0e174f2c 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -3104,7 +3104,6 @@ static int omap_udc_resume(struct platform_device *dev)
 /*-------------------------------------------------------------------------*/
 
 static struct platform_driver udc_driver = {
-	.probe		= omap_udc_probe,
 	.remove		= __exit_p(omap_udc_remove),
 	.suspend	= omap_udc_suspend,
 	.resume		= omap_udc_resume,
@@ -3122,7 +3121,7 @@ static int __init udc_init(void)
 #endif
 		"%s\n", driver_desc,
 		use_dma ?  " (dma)" : "");
-	return platform_driver_register(&udc_driver);
+	return platform_driver_probe(&udc_driver, omap_udc_probe);
 }
 module_init(udc_init);
 
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index ada5d2ba297b..556d0ec0c1f8 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -323,7 +323,7 @@ static int tt_available (
 		 * already scheduled transactions
 		 */
 		if (125 < usecs) {
-			int ufs = (usecs / 125) - 1;
+			int ufs = (usecs / 125);
 			int i;
 			for (i = uframe; i < (uframe + ufs) && i < 8; i++)
 				if (0 < tt_usecs[i]) {
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 0112353ec97d..4000cf6d1e81 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2191,7 +2191,7 @@ static int musb_resume_early(struct platform_device *pdev)
 
 #else
 #define	musb_suspend	NULL
-#define	musb_resume	NULL
+#define	musb_resume_early	NULL
 #endif
 
 static struct platform_driver musb_driver = {
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 901dffdf23b1..60924ce08493 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -3,7 +3,6 @@
  * Some code has been taken from tusb6010.c
  * Copyrights for that are attributable to:
  * Copyright (C) 2006 Nokia Corporation
- * Jarkko Nikula <jarkko.nikula@nokia.com>
  * Tony Lindgren <tony@atomide.com>
  *
  * This file is part of the Inventra Controller Driver for Linux.
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 9e20fd070d71..4ac1477d3569 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -2,7 +2,6 @@
  * TUSB6010 USB 2.0 OTG Dual Role controller
  *
  * Copyright (C) 2006 Nokia Corporation
- * Jarkko Nikula <jarkko.nikula@nokia.com>
  * Tony Lindgren <tony@atomide.com>
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/usb/musb/tusb6010.h b/drivers/usb/musb/tusb6010.h
index ab8c96286ce6..35c933a5d991 100644
--- a/drivers/usb/musb/tusb6010.h
+++ b/drivers/usb/musb/tusb6010.h
@@ -2,7 +2,6 @@
  * Definitions for TUSB6010 USB 2.0 OTG Dual Role controller
  *
  * Copyright (C) 2006 Nokia Corporation
- * Jarkko Nikula <jarkko.nikula@nokia.com>
  * Tony Lindgren <tony@atomide.com>
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c
index ff318fae7d4d..0a43a7db750f 100644
--- a/drivers/usb/otg/otg.c
+++ b/drivers/usb/otg/otg.c
@@ -43,7 +43,8 @@ EXPORT_SYMBOL(otg_get_transceiver);
  */
 void otg_put_transceiver(struct otg_transceiver *x)
 {
-	put_device(x->dev);
+	if (x)
+		put_device(x->dev);
 }
 EXPORT_SYMBOL(otg_put_transceiver);
 
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index 858bdd038fbc..dd501bb63ed6 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -175,13 +175,6 @@ static int  cyberjack_open(struct tty_struct *tty,
 	dbg("%s - usb_clear_halt", __func__);
 	usb_clear_halt(port->serial->dev, port->write_urb->pipe);
 
-	/* force low_latency on so that our tty_push actually forces
-	 * the data through, otherwise it is scheduled, and with high
-	 * data rates (like with OHCI) data can get lost.
-	 */
-	if (tty)
-		tty->low_latency = 1;
-
 	priv = usb_get_serial_port_data(port);
 	spin_lock_irqsave(&priv->lock, flags);
 	priv->rdtodo = 0;
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index eae4740d448c..e568710b263f 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -656,10 +656,6 @@ static int cypress_open(struct tty_struct *tty,
 	priv->rx_flags = 0;
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	/* setting to zero could cause data loss */
-	if (tty)
-		tty->low_latency = 1;
-
 	/* raise both lines and set termios */
 	spin_lock_irqsave(&priv->lock, flags);
 	priv->line_control = CONTROL_DTR | CONTROL_RTS;
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c
index 8a69cce40b6d..c709ec474a80 100644
--- a/drivers/usb/serial/empeg.c
+++ b/drivers/usb/serial/empeg.c
@@ -478,12 +478,6 @@ static void empeg_set_termios(struct tty_struct *tty,
 	termios->c_cflag
 		|= CS8;		/* character size 8 bits */
 
-	/*
-	 * Force low_latency on; otherwise the pushes are scheduled;
-	 * this is bad as it opens up the possibility of dropping bytes
-	 * on the floor.  We don't want to drop bytes on the floor. :)
-	 */
-	tty->low_latency = 1;
 	tty_encode_baud_rate(tty, 115200, 115200);
 }
 
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index a26a0e2cdb4a..586d30ff450b 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -973,14 +973,6 @@ static int garmin_open(struct tty_struct *tty,
 
 	dbg("%s - port %d", __func__, port->number);
 
-	/*
-	 * Force low_latency on so that our tty_push actually forces the data
-	 * through, otherwise it is scheduled, and with high data rates (like
-	 * with OHCI) data can get lost.
-	 */
-	if (tty)
-		tty->low_latency = 1;
-
 	spin_lock_irqsave(&garmin_data_p->lock, flags);
 	garmin_data_p->mode  = initial_mode;
 	garmin_data_p->count = 0;
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 9d57cace3731..4cec9906ccf3 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -122,12 +122,6 @@ int usb_serial_generic_open(struct tty_struct *tty,
 
 	dbg("%s - port %d", __func__, port->number);
 
-	/* force low_latency on so that our tty_push actually forces the data
-	   through, otherwise it is scheduled, and with high data rates (like
-	   with OHCI) data can get lost. */
-	if (tty)
-		tty->low_latency = 1;
-
 	/* clear the throttle flags */
 	spin_lock_irqsave(&port->lock, flags);
 	port->throttled = 0;
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index e85c8c0d1ad9..fb4a73d090f6 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -193,8 +193,6 @@ static const struct divisor_table_entry divisor_table[] = {
 /* local variables */
 static int debug;
 
-static int low_latency = 1;	/* tty low latency flag, on by default */
-
 static atomic_t CmdUrbs;	/* Number of outstanding Command Write Urbs */
 
 
@@ -867,9 +865,6 @@ static int edge_open(struct tty_struct *tty,
 	if (edge_port == NULL)
 		return -ENODEV;
 
-	if (tty)
-		tty->low_latency = low_latency;
-
 	/* see if we've set up our endpoint info yet (can't set it up
 	   in edge_startup as the structures were not set up at that time.) */
 	serial = port->serial;
@@ -3299,6 +3294,3 @@ MODULE_FIRMWARE("edgeport/down2.fw");
 
 module_param(debug, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(debug, "Debug enabled or not");
-
-module_param(low_latency, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index c3cdd00ddc41..513b25e044c1 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -76,7 +76,6 @@ struct edgeport_uart_buf_desc {
 #define EDGE_READ_URB_STOPPING	1
 #define EDGE_READ_URB_STOPPED	2
 
-#define EDGE_LOW_LATENCY	1
 #define EDGE_CLOSING_WAIT	4000	/* in .01 sec */
 
 #define EDGE_OUT_BUF_SIZE	1024
@@ -232,7 +231,6 @@ static unsigned short OperationalBuildNumber;
 
 static int debug;
 
-static int low_latency = EDGE_LOW_LATENCY;
 static int closing_wait = EDGE_CLOSING_WAIT;
 static int ignore_cpu_rev;
 static int default_uart_mode;		/* RS232 */
@@ -1850,9 +1848,6 @@ static int edge_open(struct tty_struct *tty,
 	if (edge_port == NULL)
 		return -ENODEV;
 
-	if (tty)
-		tty->low_latency = low_latency;
-
 	port_number = port->number - port->serial->minor;
 	switch (port_number) {
 	case 0:
@@ -3008,9 +3003,6 @@ MODULE_FIRMWARE("edgeport/down3.bin");
 module_param(debug, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(debug, "Debug enabled or not");
 
-module_param(low_latency, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
-
 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
 
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index ef92095b0732..cd62825a9ac3 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -631,13 +631,7 @@ static int ipaq_open(struct tty_struct *tty,
 		priv->free_len += PACKET_SIZE;
 	}
 
-	/*
-	 * Force low latency on. This will immediately push data to the line
-	 * discipline instead of queueing.
-	 */
-
 	if (tty) {
-		tty->low_latency = 1;
 		/* FIXME: These two are bogus */
 		tty->raw = 1;
 		tty->real_raw = 1;
diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c
index f530032ed93d..da2a2b46644a 100644
--- a/drivers/usb/serial/ipw.c
+++ b/drivers/usb/serial/ipw.c
@@ -207,9 +207,6 @@ static int ipw_open(struct tty_struct *tty,
 	if (!buf_flow_init)
 		return -ENOMEM;
 
-	if (tty)
-		tty->low_latency = 1;
-
 	/* --1: Tell the modem to initialize (we think) From sniffs this is
 	 *	always the first thing that gets sent to the modem during
 	 *	opening of the device */
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index 2314c6ae4fc2..4473d442b2aa 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -1051,7 +1051,6 @@ static int iuu_open(struct tty_struct *tty,
 		tty->termios->c_oflag = 0;
 		tty->termios->c_iflag = 0;
 		priv->termios_initialized = 1;
-		tty->low_latency = 1;
 		priv->poll = 0;
 	 }
 	spin_unlock_irqrestore(&priv->lock, flags);
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 6286baad9392..c148544953b3 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -231,13 +231,7 @@ static int kobil_open(struct tty_struct *tty,
 	/* someone sets the dev to 0 if the close method has been called */
 	port->interrupt_in_urb->dev = port->serial->dev;
 
-
-	/* force low_latency on so that our tty_push actually forces
-	 * the data through, otherwise it is scheduled, and with high
-	 * data rates (like with OHCI) data can get lost.
-	 */
 	if (tty) {
-		tty->low_latency = 1;
 
 		/* Default to echo off and other sane device settings */
 		tty->termios->c_lflag = 0;
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index e772cc0a97fd..24e3b5d4b4d4 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -446,13 +446,6 @@ static int mos7720_open(struct tty_struct *tty,
 	data = 0x0c;
 	send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
 
-	/* force low_latency on so that our tty_push actually forces *
-	 * the data through,otherwise it is scheduled, and with      *
-	 * high data rates (like with OHCI) data can get lost.       */
-
-	if (tty)
-		tty->low_latency = 1;
-
 	/* see if we've set up our endpoint info yet   *
 	 * (can't set it up in mos7720_startup as the  *
 	 * structures were not set up at that time.)   */
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 2c20e88a91b3..84fb1dcd30dc 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -38,7 +38,7 @@
 /*
  * Version Information
  */
-#define DRIVER_VERSION "1.3.1"
+#define DRIVER_VERSION "1.3.2"
 #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver"
 
 /*
@@ -123,6 +123,11 @@
 #define BANDB_DEVICE_ID_USOPTL4_4       0xAC44
 #define BANDB_DEVICE_ID_USOPTL4_2       0xAC42
 
+/* This driver also supports the ATEN UC2324 device since it is mos7840 based
+ *  - if I knew the device id it would also support the ATEN UC2322 */
+#define USB_VENDOR_ID_ATENINTL		0x0557
+#define ATENINTL_DEVICE_ID_UC2324	0x2011
+
 /* Interrupt Routine Defines    */
 
 #define SERIAL_IIR_RLS      0x06
@@ -170,6 +175,7 @@ static struct usb_device_id moschip_port_id_table[] = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
+	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
 	{}			/* terminating entry */
 };
 
@@ -178,6 +184,7 @@ static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
+	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
 	{}			/* terminating entry */
 };
 
@@ -1000,12 +1007,6 @@ static int mos7840_open(struct tty_struct *tty,
 	status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset,
 									Data);
 
-	/* force low_latency on so that our tty_push actually forces *
-	 * the data through,otherwise it is scheduled, and with      *
-	 * high data rates (like with OHCI) data can get lost.       */
-	if (tty)
-		tty->low_latency = 1;
-
 	/* Check to see if we've set up our endpoint info yet    *
 	 * (can't set it up in mos7840_startup as the structures *
 	 * were not set up at that time.)                        */
@@ -2477,9 +2478,14 @@ static int mos7840_startup(struct usb_serial *serial)
 		mos7840_set_port_private(serial->port[i], mos7840_port);
 		spin_lock_init(&mos7840_port->pool_lock);
 
-		mos7840_port->port_num = ((serial->port[i]->number -
-					   (serial->port[i]->serial->minor)) +
-					  1);
+		/* minor is not initialised until later by
+		 * usb-serial.c:get_free_serial() and cannot therefore be used
+		 * to index device instances */
+		mos7840_port->port_num = i + 1;
+		dbg ("serial->port[i]->number = %d", serial->port[i]->number);
+		dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor);
+		dbg ("mos7840_port->port_num = %d", mos7840_port->port_num);
+		dbg ("serial->minor = %d", serial->minor);
 
 		if (mos7840_port->port_num == 1) {
 			mos7840_port->SpRegOffset = 0x0;
@@ -2690,13 +2696,16 @@ static void mos7840_shutdown(struct usb_serial *serial)
 
 	for (i = 0; i < serial->num_ports; ++i) {
 		mos7840_port = mos7840_get_port_private(serial->port[i]);
-		spin_lock_irqsave(&mos7840_port->pool_lock, flags);
-		mos7840_port->zombie = 1;
-		spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
-		usb_kill_urb(mos7840_port->control_urb);
-		kfree(mos7840_port->ctrl_buf);
-		kfree(mos7840_port->dr);
-		kfree(mos7840_port);
+		dbg ("mos7840_port %d = %p", i, mos7840_port);
+		if (mos7840_port) {
+			spin_lock_irqsave(&mos7840_port->pool_lock, flags);
+			mos7840_port->zombie = 1;
+			spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
+			usb_kill_urb(mos7840_port->control_urb);
+			kfree(mos7840_port->ctrl_buf);
+			kfree(mos7840_port->dr);
+			kfree(mos7840_port);
+		}
 		mos7840_set_port_private(serial->port[i], NULL);
 	}
 
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 839583dc8b6a..b500ad10b758 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -159,14 +159,6 @@ static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port,
 	priv->port = port;
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	/*
-	 * Force low_latency on so that our tty_push actually forces the data
-	 * through, otherwise it is scheduled, and with high data rates (like
-	 * with OHCI) data can get lost.
-	 */
-	if (tty)
-		tty->low_latency = 1;
-
 	/* Start reading from the device */
 	usb_fill_bulk_urb(priv->bulk_read_urb, priv->udev,
 			  usb_rcvbulkpipe(priv->udev,
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 47bd070f24b7..7817b82889ca 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -936,9 +936,6 @@ static int option_open(struct tty_struct *tty,
 				usb_pipeout(urb->pipe), 0); */
 	}
 
-	if (tty)
-		tty->low_latency = 1;
-
 	option_send_setup(tty, port);
 
 	return 0;
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index d9bf9a5c20ec..913225c61610 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -14,7 +14,7 @@
   Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
 */
 
-#define DRIVER_VERSION "v.1.3.2"
+#define DRIVER_VERSION "v.1.3.3"
 #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>"
 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
 
@@ -259,9 +259,21 @@ static int sierra_send_setup(struct tty_struct *tty,
 			val |= 0x02;
 
 		/* If composite device then properly report interface */
-		if (serial->num_ports == 1)
+		if (serial->num_ports == 1) {
 			interface = sierra_calc_interface(serial);
 
+			/* Control message is sent only to interfaces with
+			 * interrupt_in endpoints
+			 */
+			if (port->interrupt_in_urb) {
+				/* send control message */
+				return usb_control_msg(serial->dev,
+					usb_rcvctrlpipe(serial->dev, 0),
+					0x22, 0x21, val, interface,
+					NULL, 0, USB_CTRL_SET_TIMEOUT);
+			}
+		}
+
 		/* Otherwise the need to do non-composite mapping */
 		else {
 			if (port->bulk_out_endpointAddress == 2)
@@ -270,12 +282,13 @@ static int sierra_send_setup(struct tty_struct *tty,
 				interface = 1;
 			else if (port->bulk_out_endpointAddress == 5)
 				interface = 2;
-		}
 
-		return usb_control_msg(serial->dev,
+			return usb_control_msg(serial->dev,
 				usb_rcvctrlpipe(serial->dev, 0),
 				0x22, 0x21, val, interface,
 				NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+		}
 	}
 
 	return 0;
@@ -585,9 +598,6 @@ static int sierra_open(struct tty_struct *tty,
 		}
 	}
 
-	if (tty)
-		tty->low_latency = 1;
-
 	sierra_send_setup(tty, port);
 
 	/* start up the interrupt endpoint if we have one */
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 9c4c700c7cc6..0a64bac306ee 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -50,11 +50,10 @@
 
 #define TI_TRANSFER_TIMEOUT	2
 
-#define TI_DEFAULT_LOW_LATENCY	0
 #define TI_DEFAULT_CLOSING_WAIT	4000		/* in .01 secs */
 
 /* supported setserial flags */
-#define TI_SET_SERIAL_FLAGS	(ASYNC_LOW_LATENCY)
+#define TI_SET_SERIAL_FLAGS	0
 
 /* read urb states */
 #define TI_READ_URB_RUNNING	0
@@ -161,7 +160,6 @@ static int ti_buf_get(struct circ_buf *cb, char *buf, int count);
 
 /* module parameters */
 static int debug;
-static int low_latency = TI_DEFAULT_LOW_LATENCY;
 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
 static unsigned int vendor_3410_count;
@@ -296,10 +294,6 @@ MODULE_FIRMWARE("mts_edge.fw");
 module_param(debug, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
 
-module_param(low_latency, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(low_latency,
-		"TTY low_latency flag, 0=off, 1=on, default is off");
-
 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(closing_wait,
     "Maximum wait for data to drain in close, in .01 secs, default is 4000");
@@ -448,7 +442,6 @@ static int ti_startup(struct usb_serial *serial)
 		spin_lock_init(&tport->tp_lock);
 		tport->tp_uart_base_addr = (i == 0 ?
 				TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
-		tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0;
 		tport->tp_closing_wait = closing_wait;
 		init_waitqueue_head(&tport->tp_msr_wait);
 		init_waitqueue_head(&tport->tp_write_wait);
@@ -528,10 +521,6 @@ static int ti_open(struct tty_struct *tty,
 	if (mutex_lock_interruptible(&tdev->td_open_close_lock))
 		return -ERESTARTSYS;
 
-	if (tty)
-		tty->low_latency =
-				(tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-
 	port_number = port->number - port->serial->minor;
 
 	memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
@@ -1454,7 +1443,6 @@ static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
 		return -EFAULT;
 
 	tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
-	tty->low_latency = (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 	tport->tp_closing_wait = new_serial.closing_wait;
 
 	return 0;
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 2a70563bbee1..0a566eea49c0 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -137,22 +137,10 @@ static void destroy_serial(struct kref *kref)
 
 	dbg("%s - %s", __func__, serial->type->description);
 
-	serial->type->shutdown(serial);
-
 	/* return the minor range that this device had */
 	if (serial->minor != SERIAL_TTY_NO_MINOR)
 		return_serial(serial);
 
-	for (i = 0; i < serial->num_ports; ++i)
-		serial->port[i]->port.count = 0;
-
-	/* the ports are cleaned up and released in port_release() */
-	for (i = 0; i < serial->num_ports; ++i)
-		if (serial->port[i]->dev.parent != NULL) {
-			device_unregister(&serial->port[i]->dev);
-			serial->port[i] = NULL;
-		}
-
 	/* If this is a "fake" port, we have to clean it up here, as it will
 	 * not get cleaned up in port_release() as it was never registered with
 	 * the driver core */
@@ -187,7 +175,7 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 	struct usb_serial *serial;
 	struct usb_serial_port *port;
 	unsigned int portNumber;
-	int retval;
+	int retval = 0;
 
 	dbg("%s", __func__);
 
@@ -198,21 +186,24 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 		return -ENODEV;
 	}
 
+	mutex_lock(&serial->disc_mutex);
 	portNumber = tty->index - serial->minor;
 	port = serial->port[portNumber];
-	if (!port) {
-		retval = -ENODEV;
-		goto bailout_kref_put;
-	}
-
-	if (port->serial->disconnected) {
+	if (!port || serial->disconnected)
 		retval = -ENODEV;
-		goto bailout_kref_put;
-	}
+	else
+		get_device(&port->dev);
+	/*
+	 * Note: Our locking order requirement does not allow port->mutex
+	 * to be acquired while serial->disc_mutex is held.
+	 */
+	mutex_unlock(&serial->disc_mutex);
+	if (retval)
+		goto bailout_serial_put;
 
 	if (mutex_lock_interruptible(&port->mutex)) {
 		retval = -ERESTARTSYS;
-		goto bailout_kref_put;
+		goto bailout_port_put;
 	}
 
 	++port->port.count;
@@ -232,14 +223,20 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 			goto bailout_mutex_unlock;
 		}
 
-		retval = usb_autopm_get_interface(serial->interface);
+		mutex_lock(&serial->disc_mutex);
+		if (serial->disconnected)
+			retval = -ENODEV;
+		else
+			retval = usb_autopm_get_interface(serial->interface);
 		if (retval)
 			goto bailout_module_put;
+
 		/* only call the device specific open if this
 		 * is the first time the port is opened */
 		retval = serial->type->open(tty, port, filp);
 		if (retval)
 			goto bailout_interface_put;
+		mutex_unlock(&serial->disc_mutex);
 	}
 
 	mutex_unlock(&port->mutex);
@@ -248,13 +245,16 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 bailout_interface_put:
 	usb_autopm_put_interface(serial->interface);
 bailout_module_put:
+	mutex_unlock(&serial->disc_mutex);
 	module_put(serial->type->driver.owner);
 bailout_mutex_unlock:
 	port->port.count = 0;
 	tty->driver_data = NULL;
 	tty_port_tty_set(&port->port, NULL);
 	mutex_unlock(&port->mutex);
-bailout_kref_put:
+bailout_port_put:
+	put_device(&port->dev);
+bailout_serial_put:
 	usb_serial_put(serial);
 	return retval;
 }
@@ -262,6 +262,9 @@ bailout_kref_put:
 static void serial_close(struct tty_struct *tty, struct file *filp)
 {
 	struct usb_serial_port *port = tty->driver_data;
+	struct usb_serial *serial;
+	struct module *owner;
+	int count;
 
 	if (!port)
 		return;
@@ -269,6 +272,8 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 	dbg("%s - port %d", __func__, port->number);
 
 	mutex_lock(&port->mutex);
+	serial = port->serial;
+	owner = serial->type->driver.owner;
 
 	if (port->port.count == 0) {
 		mutex_unlock(&port->mutex);
@@ -281,7 +286,7 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 		 * this before we drop the port count. The call is protected
 		 * by the port mutex
 		 */
-		port->serial->type->close(tty, port, filp);
+		serial->type->close(tty, port, filp);
 
 	if (port->port.count == (port->console ? 2 : 1)) {
 		struct tty_struct *tty = tty_port_tty_get(&port->port);
@@ -295,17 +300,23 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 		}
 	}
 
-	if (port->port.count == 1) {
-		mutex_lock(&port->serial->disc_mutex);
-		if (!port->serial->disconnected)
-			usb_autopm_put_interface(port->serial->interface);
-		mutex_unlock(&port->serial->disc_mutex);
-		module_put(port->serial->type->driver.owner);
-	}
 	--port->port.count;
-
+	count = port->port.count;
 	mutex_unlock(&port->mutex);
-	usb_serial_put(port->serial);
+	put_device(&port->dev);
+
+	/* Mustn't dereference port any more */
+	if (count == 0) {
+		mutex_lock(&serial->disc_mutex);
+		if (!serial->disconnected)
+			usb_autopm_put_interface(serial->interface);
+		mutex_unlock(&serial->disc_mutex);
+	}
+	usb_serial_put(serial);
+
+	/* Mustn't dereference serial any more */
+	if (count == 0)
+		module_put(owner);
 }
 
 static int serial_write(struct tty_struct *tty, const unsigned char *buf,
@@ -549,7 +560,13 @@ static void kill_traffic(struct usb_serial_port *port)
 
 static void port_free(struct usb_serial_port *port)
 {
+	/*
+	 * Stop all the traffic before cancelling the work, so that
+	 * nobody will restart it by calling usb_serial_port_softint.
+	 */
 	kill_traffic(port);
+	cancel_work_sync(&port->work);
+
 	usb_free_urb(port->read_urb);
 	usb_free_urb(port->write_urb);
 	usb_free_urb(port->interrupt_in_urb);
@@ -558,7 +575,6 @@ static void port_free(struct usb_serial_port *port)
 	kfree(port->bulk_out_buffer);
 	kfree(port->interrupt_in_buffer);
 	kfree(port->interrupt_out_buffer);
-	flush_scheduled_work();		/* port->work */
 	kfree(port);
 }
 
@@ -1043,6 +1059,12 @@ void usb_serial_disconnect(struct usb_interface *interface)
 	usb_set_intfdata(interface, NULL);
 	/* must set a flag, to signal subdrivers */
 	serial->disconnected = 1;
+	mutex_unlock(&serial->disc_mutex);
+
+	/* Unfortunately, many of the sub-drivers expect the port structures
+	 * to exist when their shutdown method is called, so we have to go
+	 * through this awkward two-step unregistration procedure.
+	 */
 	for (i = 0; i < serial->num_ports; ++i) {
 		port = serial->port[i];
 		if (port) {
@@ -1052,11 +1074,21 @@ void usb_serial_disconnect(struct usb_interface *interface)
 				tty_kref_put(tty);
 			}
 			kill_traffic(port);
+			cancel_work_sync(&port->work);
+			device_del(&port->dev);
+		}
+	}
+	serial->type->shutdown(serial);
+	for (i = 0; i < serial->num_ports; ++i) {
+		port = serial->port[i];
+		if (port) {
+			put_device(&port->dev);
+			serial->port[i] = NULL;
 		}
 	}
+
 	/* let the last holder of this object
 	 * cause it to be cleaned up */
-	mutex_unlock(&serial->disc_mutex);
 	usb_serial_put(serial);
 	dev_info(dev, "device disconnected\n");
 }
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 4facce3d9364..5ac414bda718 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -296,14 +296,6 @@ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port,
 	priv->throttled = 0;
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	/*
-	 * Force low_latency on so that our tty_push actually forces the data
-	 * through, otherwise it is scheduled, and with high data rates (like
-	 * with OHCI) data can get lost.
-	 */
-	if (tty)
-		tty->low_latency = 1;
-
 	/* Start reading from the device */
 	usb_fill_bulk_urb(port->read_urb, serial->dev,
 			   usb_rcvbulkpipe(serial->dev,
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 96db479d1165..fa65a3b08601 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1851,6 +1851,12 @@ UNUSUAL_DEV(  0xed06, 0x4500, 0x0001, 0x0001,
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		US_FL_CAPACITY_HEURISTICS),
 
+/* Reported by Alessio Treglia <quadrispro@ubuntu.com> */
+UNUSUAL_DEV( 0xed10, 0x7636, 0x0001, 0x0001,
+		"TGE",
+		"Digital MP3 Audio Player",
+		US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE ),
+
 /* Control/Bulk transport for all SubClass values */
 USUAL_DEV(US_SC_RBC, US_PR_CB, USB_US_TYPE_STOR),
 USUAL_DEV(US_SC_8020, US_PR_CB, USB_US_TYPE_STOR),