This commit fixes the following warning when building virtio_snd driver.
"
*** CID 1583619: Uninitialized variables (UNINIT)
sound/virtio/virtio_kctl.c:294 in virtsnd_kctl_tlv_op()
288
289 break;
290 }
291
292 kfree(tlv);
293
vvv CID 1583619: Uninitialized variables (UNINIT)
vvv Using uninitialized value "rc".
294 return rc;
295 }
296
297 /**
298 * virtsnd_kctl_get_enum_items() - Query items for the ENUMERATED element type.
299 * @snd: VirtIO sound device.
"
This warning is caused by the absence of the "default" branch in the
switch-block, and is a false positive because the kernel calls
virtsnd_kctl_tlv_op() only with values for op_flag processed in
this block.
Also, this commit unifies the cleanup path for all possible control
paths in the callback function.
Signed-off-by: Anton Yakovlev <anton.yakovlev@opensynergy.com>
Signed-off-by: Aiswarya Cyriac <aiswarya.cyriac@opensynergy.com>
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1583619 ("Uninitialized variables")
Fixes: d6568e3de42d ("ALSA: virtio: add support for audio controls")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20240216100643.688590-1-aiswarya.cyriac@opensynergy.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Bug: 330891925
Change-Id: I6fb999ed48457baddcde95a3539daf010d505296
(cherry picked from commit ba00e413fa1515e4d0890803c01ebc555f500f15)
Signed-off-by: Marcin Radomski <dextero@google.com>
60534eef47