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| author | Takashi Iwai <tiwai@suse.de> | 2021-04-06 13:35:34 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-04-07 11:59:56 +0200 |
| commit | 5fb45414ae03421255593fd5556aa2d1d82303aa (patch) | |
| tree | 7a3e5262d0f82e23b3b8a73f4c7cb4ff6eab8ec6 /sound/usb/usbaudio.h | |
| parent | ALSA: control - off by one in store_mode() (diff) | |
| download | linux-5fb45414ae03421255593fd5556aa2d1d82303aa.tar.xz linux-5fb45414ae03421255593fd5556aa2d1d82303aa.zip | |
ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls
There are a few calls of usb_driver_claim_interface() but all of those
miss the proper error checks, as reported by Coverity. This patch
adds those missing checks.
Along with it, replace the magic pointer with -1 with a constant
USB_AUDIO_IFACE_UNUSED for better readability.
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1475943 ("Error handling issues")
Addresses-Coverity-ID: 1475944 ("Error handling issues")
Addresses-Coverity-ID: 1475945 ("Error handling issues")
Fixes: b1ce7ba619d9 ("ALSA: usb-audio: claim autodetected PCM interfaces all at once")
Fixes: e5779998bf8b ("ALSA: usb-audio: refactor code")
Link: https://lore.kernel.org/r/202104051059.FB7F3016@keescook
Link: https://lore.kernel.org/r/20210406113534.30455-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.h')
| -rw-r--r-- | sound/usb/usbaudio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 60b9dd7df6bb..8794c8658ab9 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -61,6 +61,8 @@ struct snd_usb_audio { struct media_intf_devnode *ctl_intf_media_devnode; }; +#define USB_AUDIO_IFACE_UNUSED ((void *)-1L) + #define usb_audio_err(chip, fmt, args...) \ dev_err(&(chip)->dev->dev, fmt, ##args) #define usb_audio_warn(chip, fmt, args...) \ |