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| author | Tom Rix <trix@redhat.com> | 2022-01-26 21:21:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-08 20:34:07 +0300 |
| commit | c2a91f1ef38addab652c3c6752c2a1ce20eeaa89 (patch) | |
| tree | 675bd8d798268fe6310fe2387caced77bbba1d78 /sound/usb | |
| parent | 63c69c93d978734edbaa2ba277122aedc7d22a25 (diff) | |
| download | linux-c2a91f1ef38addab652c3c6752c2a1ce20eeaa89.tar.xz | |
ALSA: usb-audio: initialize variables that could ignore errors
commit 3da4b7403db87d39bc2613cfd790de1de99a70ab upstream.
clang static analysis reports this representative issue
mixer.c:1548:35: warning: Assigned value is garbage or undefined
ucontrol->value.integer.value[0] = val;
^ ~~~
The filter_error() macro allows errors to be ignored.
If errors can be ignored, initialize variables
so garbage will not be used.
Fixes: 48cc42973509 ("ALSA: usb-audio: Filter error from connector kctl ops, too")
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220126182142.1184819-1-trix@redhat.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/mixer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 8e030b1c061a..567514832b0d 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1496,6 +1496,10 @@ error: usb_audio_err(chip, "cannot get connectors status: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", UAC_GET_CUR, validx, idx, cval->val_type); + + if (val) + *val = 0; + return filter_error(cval, ret); } |