From 3a56855bb549211031184e45fe1a9d24874d7227 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor Date: Fri, 19 Apr 2024 17:25:59 -0700 Subject: 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 Message-ID: <20240419-alsa-scarlett2-fix-wsometimes-uninitialized-v1-1-e2ace8642e08@kernel.org> Signed-off-by: Takashi Iwai --- sound/usb/mixer_scarlett2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/usb') 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); -- cgit v1.2.3-70-g09d2