From: Tom Rix trix@redhat.com
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 --- sound/usb/mixer.c | 4 ++++ 1 file changed, 4 insertions(+)
--- 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); }