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authorDamien Zammit <damien@zamaudio.com>2013-01-04 09:51:44 +0100
committerTakashi Iwai <tiwai@suse.de>2013-01-04 09:53:17 +0100
commitb7b435e81b7228af68b5d3bef277fce10100b369 (patch)
tree07f7e0d1d4fea7403c39a4c3e3e5f7e1bea76f55 /sound/usb
parent8f7f3ab15e0873a9b04d5a38ef1d33831aaf609d (diff)
downloadlinux-b7b435e81b7228af68b5d3bef277fce10100b369.tar.bz2
ALSA: usb-audio: Fix kernel panic of Digidesign Mbox2 quirk
This patch is based on 3.8-rc1. It fixes two things: 1) A kernel panic caused by incorrect allocation of a u8 variable "bootresponse". 2) A noisy dmesg (urb status -32) caused by broken pipe to an invalid midi endpoint. It is also a little cleaner because there is no need for a new QUIRK_MIDI type as suggested by kernel developers, since the device follows exactly the MIDIMAN protocol. Signed-off-by: Damien Zammit <damien@zamaudio.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/midi.c4
-rw-r--r--sound/usb/quirks-table.h2
-rw-r--r--sound/usb/quirks.c16
-rw-r--r--sound/usb/usbaudio.h1
4 files changed, 8 insertions, 15 deletions
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index c183d34842ac..34b9bb7fe87c 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -2181,10 +2181,6 @@ int snd_usbmidi_create(struct snd_card *card,
umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
break;
- case QUIRK_MIDI_MBOX2:
- umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
- err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
- break;
case QUIRK_MIDI_RAW_BYTES:
umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
/*
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 5388ca3a4ab0..78e845ec65da 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3015,7 +3015,7 @@ YAMAHA_DEVICE(0x7010, "UB99"),
},
{
.ifnum = 6,
- .type = QUIRK_MIDI_MBOX2,
+ .type = QUIRK_MIDI_MIDIMAN,
.data = &(const struct snd_usb_midi_endpoint_info) {
.out_ep = 0x02,
.out_cables = 0x0001,
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index f104c68fe1e0..acc12f004c23 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -306,7 +306,6 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
- [QUIRK_MIDI_MBOX2] = create_any_midi_quirk,
[QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
[QUIRK_MIDI_CME] = create_any_midi_quirk,
@@ -528,11 +527,11 @@ static void mbox2_setup_48_24_magic(struct usb_device *dev)
#define MBOX2_BOOT_LOADING 0x01 /* Hard coded into the device */
#define MBOX2_BOOT_READY 0x02 /* Hard coded into the device */
-int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
+static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
{
struct usb_host_config *config = dev->actconfig;
int err;
- u8 bootresponse;
+ u8 bootresponse[12];
int fwsize;
int count;
@@ -546,20 +545,20 @@ int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
snd_printd("usb-audio: Sending Digidesign Mbox 2 boot sequence...\n");
count = 0;
- bootresponse = MBOX2_BOOT_LOADING;
- while ((bootresponse == MBOX2_BOOT_LOADING) && (count < 10)) {
+ bootresponse[0] = MBOX2_BOOT_LOADING;
+ while ((bootresponse[0] == MBOX2_BOOT_LOADING) && (count < 10)) {
msleep(500); /* 0.5 second delay */
snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
/* Control magic - load onboard firmware */
0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012);
- if (bootresponse == MBOX2_BOOT_READY)
+ if (bootresponse[0] == MBOX2_BOOT_READY)
break;
snd_printd("usb-audio: device not ready, resending boot sequence...\n");
count++;
}
- if (bootresponse != MBOX2_BOOT_READY) {
- snd_printk(KERN_ERR "usb-audio: Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse);
+ if (bootresponse[0] != MBOX2_BOOT_READY) {
+ snd_printk(KERN_ERR "usb-audio: Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse[0]);
return -ENODEV;
}
@@ -660,7 +659,6 @@ static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
return 0; /* keep this altsetting */
}
-
static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
int iface, int altno)
{
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index a8172c119796..1ac3fd9cc5a6 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -76,7 +76,6 @@ enum quirk_type {
QUIRK_MIDI_YAMAHA,
QUIRK_MIDI_MIDIMAN,
QUIRK_MIDI_NOVATION,
- QUIRK_MIDI_MBOX2,
QUIRK_MIDI_RAW_BYTES,
QUIRK_MIDI_EMAGIC,
QUIRK_MIDI_CME,