diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 17:37:46 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-16 11:02:23 +0200 |
commit | fcc2cc1f35613c016e1de25bb001bfdd9eaa25f9 (patch) | |
tree | aa46d8f468a9ea07bfd67003d61bc6440e8bb045 | |
parent | a4e6451d3214e160107a17304fb90fb11bd6513b (diff) | |
download | linux-fcc2cc1f35613c016e1de25bb001bfdd9eaa25f9.tar.bz2 |
USB: move snd_usb_pipe_sanity_check into the USB core
snd_usb_pipe_sanity_check() is a great function, so let's move it into
the USB core so that other parts of the kernel, including the USB core,
can call it.
Name it usb_pipe_type_check() to match the existing
usb_urb_ep_type_check() call, which now uses this function.
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Eli Billauer <eli.billauer@gmail.com>
Cc: Emiliano Ingrassia <ingrassia@epigenesys.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Alexander Tsoy <alexander@tsoy.me>
Cc: "Geoffrey D. Bennett" <g@b4.vu>
Cc: Jussi Laako <jussi@sonarnerd.net>
Cc: Nick Kossifidis <mickflemm@gmail.com>
Cc: Dmitry Panchenko <dmitry@d-systems.ee>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jesus Ramos <jesus-ramos@live.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200914153756.3412156-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/usb/core/urb.c | 31 | ||||
-rw-r--r-- | include/linux/usb.h | 1 | ||||
-rw-r--r-- | sound/usb/helper.c | 16 | ||||
-rw-r--r-- | sound/usb/helper.h | 1 | ||||
-rw-r--r-- | sound/usb/mixer_scarlett_gen2.c | 2 | ||||
-rw-r--r-- | sound/usb/quirks.c | 12 |
6 files changed, 32 insertions, 31 deletions
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 27e83e55a590..357b149b20d3 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -192,24 +192,39 @@ static const int pipetypes[4] = { }; /** - * usb_urb_ep_type_check - sanity check of endpoint in the given urb - * @urb: urb to be checked + * usb_pipe_type_check - sanity check of a specific pipe for a usb device + * @dev: struct usb_device to be checked + * @pipe: pipe to check * * This performs a light-weight sanity check for the endpoint in the - * given urb. It returns 0 if the urb contains a valid endpoint, otherwise - * a negative error code. + * given usb device. It returns 0 if the pipe is valid for the specific usb + * device, otherwise a negative error code. */ -int usb_urb_ep_type_check(const struct urb *urb) +int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe) { const struct usb_host_endpoint *ep; - ep = usb_pipe_endpoint(urb->dev, urb->pipe); + ep = usb_pipe_endpoint(dev, pipe); if (!ep) return -EINVAL; - if (usb_pipetype(urb->pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) + if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) return -EINVAL; return 0; } +EXPORT_SYMBOL_GPL(usb_pipe_type_check); + +/** + * usb_urb_ep_type_check - sanity check of endpoint in the given urb + * @urb: urb to be checked + * + * This performs a light-weight sanity check for the endpoint in the + * given urb. It returns 0 if the urb contains a valid endpoint, otherwise + * a negative error code. + */ +int usb_urb_ep_type_check(const struct urb *urb) +{ + return usb_pipe_type_check(urb->dev, urb->pipe); +} EXPORT_SYMBOL_GPL(usb_urb_ep_type_check); /** @@ -474,7 +489,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) */ /* Check that the pipe's type matches the endpoint's type */ - if (usb_urb_ep_type_check(urb)) + if (usb_pipe_type_check(urb->dev, urb->pipe)) dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n", usb_pipetype(urb->pipe), pipetypes[xfertype]); diff --git a/include/linux/usb.h b/include/linux/usb.h index 20c555db4621..0b3963d7ec38 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1764,6 +1764,7 @@ static inline int usb_urb_dir_out(struct urb *urb) return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT; } +int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe); int usb_urb_ep_type_check(const struct urb *urb); void *usb_alloc_coherent(struct usb_device *dev, size_t size, diff --git a/sound/usb/helper.c b/sound/usb/helper.c index 4c12cc5b53fd..cf92d7110773 100644 --- a/sound/usb/helper.c +++ b/sound/usb/helper.c @@ -63,20 +63,6 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype return NULL; } -/* check the validity of pipe and EP types */ -int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe) -{ - static const int pipetypes[4] = { - PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT - }; - struct usb_host_endpoint *ep; - - ep = usb_pipe_endpoint(dev, pipe); - if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)]) - return -EINVAL; - return 0; -} - /* * Wrapper for usb_control_msg(). * Allocates a temp buffer to prevent dmaing from/to the stack. @@ -89,7 +75,7 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, void *buf = NULL; int timeout; - if (snd_usb_pipe_sanity_check(dev, pipe)) + if (usb_pipe_type_check(dev, pipe)) return -EINVAL; if (size > 0) { diff --git a/sound/usb/helper.h b/sound/usb/helper.h index 5e8a18b4e7b9..f5b4c6647e4d 100644 --- a/sound/usb/helper.h +++ b/sound/usb/helper.h @@ -7,7 +7,6 @@ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); -int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe); int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size); diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index 0ffff7640892..9609c6d9655c 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -1978,7 +1978,7 @@ static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer) return 0; } - if (snd_usb_pipe_sanity_check(dev, pipe)) + if (usb_pipe_type_check(dev, pipe)) return -EINVAL; mixer->urb = usb_alloc_urb(0, GFP_KERNEL); diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 75bbdc691243..1b482848e73b 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -856,7 +856,7 @@ static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev) static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 }; void *buf; - if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05))) + if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05))) return -EINVAL; buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL); if (!buf) @@ -885,7 +885,7 @@ static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev) { int ret; - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE, @@ -994,7 +994,7 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev) dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n"); - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; /* If the Axe-Fx III has not fully booted, it will timeout when trying * to enable the audio streaming interface. A more generous timeout is @@ -1028,7 +1028,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf, { int err, actual_length; - if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01))) + if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01))) return -EINVAL; err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length, &actual_length, 1000); @@ -1040,7 +1040,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf, memset(buf, 0, buf_size); - if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82))) + if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82))) return -EINVAL; err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size, &actual_length, 1000); @@ -1127,7 +1127,7 @@ static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev) { int ret; - if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0))) + if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 1, USB_TYPE_VENDOR | USB_RECIP_DEVICE, |