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| author | Nathan Chancellor <nathan@kernel.org> | 2024-04-20 03:25:59 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-04-21 20:30:53 +0300 |
| commit | 3a56855bb549211031184e45fe1a9d24874d7227 (patch) | |
| tree | 0596f47b15e6557eefdc3eaa0f8abb95611acdde /sound/usb | |
| parent | 32cb23a0f911317cdb5030035e49a204aa86fef5 (diff) | |
| download | linux-3a56855bb549211031184e45fe1a9d24874d7227.tar.xz | |
ALSA: scarlett2: Zero initialize ret in scarlett2_ag_target_ctl_get()
Clang warns (or errors with CONFIG_WERROR):
sound/usb/mixer_scarlett2.c:3697:6: error: variable 'err' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
3697 | if (private->autogain_updated) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~
sound/usb/mixer_scarlett2.c:3707:9: note: uninitialized use occurs here
3707 | return err;
| ^~~
sound/usb/mixer_scarlett2.c:3697:2: note: remove the 'if' if its condition is always true
3697 | if (private->autogain_updated) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/usb/mixer_scarlett2.c:3688:9: note: initialize the variable 'err' to silence this warning
3688 | int err;
| ^
| = 0
1 error generated.
Initialize ret to zero to ensure ret is initialized in all paths within
scarlett2_ag_target_ctl_get(), which matches the style of other
functions in this driver.
Fixes: e30ea5340c25 ("ALSA: scarlett2: Add autogain target controls")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Message-ID: <20240419-alsa-scarlett2-fix-wsometimes-uninitialized-v1-1-e2ace8642e08@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/mixer_scarlett2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index a2de31a0371b..b251d25f2a85 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -3685,7 +3685,7 @@ static int scarlett2_ag_target_ctl_get( struct usb_mixer_elem_info *elem = kctl->private_data; struct usb_mixer_interface *mixer = elem->head.mixer; struct scarlett2_data *private = mixer->private_data; - int err; + int err = 0; mutex_lock(&private->data_mutex); |