5:33 a.m.
Hi,
url:
https://github.com/0day-ci/linux/commits/zuoqilin1-163-com/sound-Remove-r...
base: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
config: x86_64-randconfig-s022-20210309 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-262-g5e674421-dirty
# https://github.com/0day-ci/linux/commit/7477aca62fd7115a8e7034e78fd7b5d42...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
zuoqilin1-163-com/sound-Remove-redundant-steps/20210310-183451
git checkout 7477aca62fd7115a8e7034e78fd7b5d427deb74b
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
"sparse warnings: (new ones prefixed by >>)"
> sound/core/oss/mixer_oss.c:832:7: sparse: sparse: unused label
'__free_only'
sound/core/oss/mixer_oss.c:886:7: sparse: sparse: unused
label '__free_only'
vim +/__free_only +832 sound/core/oss/mixer_oss.c
f956b4a3ae790e1 Takashi Iwai 2005-11-17 789 static int
snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
^1da177e4c3f415 Linus Torvalds 2005-04-16 790 {
f956b4a3ae790e1 Takashi Iwai 2005-11-17 791 struct snd_card *card =
fmixer->card;
f956b4a3ae790e1 Takashi Iwai 2005-11-17 792 struct snd_mixer_oss *mixer =
fmixer->mixer;
f956b4a3ae790e1 Takashi Iwai 2005-11-17 793 struct snd_kcontrol *kctl;
f956b4a3ae790e1 Takashi Iwai 2005-11-17 794 struct snd_mixer_oss_slot *pslot;
^1da177e4c3f415 Linus Torvalds 2005-04-16 795 struct slot *slot;
f956b4a3ae790e1 Takashi Iwai 2005-11-17 796 struct snd_ctl_elem_info *uinfo;
f956b4a3ae790e1 Takashi Iwai 2005-11-17 797 struct snd_ctl_elem_value *uctl;
^1da177e4c3f415 Linus Torvalds 2005-04-16 798 int err, idx;
^1da177e4c3f415 Linus Torvalds 2005-04-16 799
ca2c0966562cfbf Takashi Iwai 2005-09-09 800 uinfo = kzalloc(sizeof(*uinfo),
GFP_KERNEL);
ca2c0966562cfbf Takashi Iwai 2005-09-09 801 uctl = kzalloc(sizeof(*uctl),
GFP_KERNEL);
^1da177e4c3f415 Linus Torvalds 2005-04-16 802 if (uinfo == NULL || uctl == NULL) {
7477aca62fd7115 zuoqilin 2021-03-10 803 return -ENOMEM;
^1da177e4c3f415 Linus Torvalds 2005-04-16 804 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 805
down_read(&card->controls_rwsem);
^1da177e4c3f415 Linus Torvalds 2005-04-16 806 kctl = snd_mixer_oss_test_id(mixer,
"Capture Source", 0);
7c22f1aaa23370b Takashi Iwai 2005-10-10 807 if (! kctl) {
7c22f1aaa23370b Takashi Iwai 2005-10-10 808 err = -ENOENT;
7c22f1aaa23370b Takashi Iwai 2005-10-10 809 goto __unlock;
7c22f1aaa23370b Takashi Iwai 2005-10-10 810 }
7c22f1aaa23370b Takashi Iwai 2005-10-10 811 if ((err = kctl->info(kctl, uinfo))
< 0)
7c22f1aaa23370b Takashi Iwai 2005-10-10 812 goto __unlock;
7c22f1aaa23370b Takashi Iwai 2005-10-10 813 if ((err = kctl->get(kctl, uctl))
< 0)
7c22f1aaa23370b Takashi Iwai 2005-10-10 814 goto __unlock;
^1da177e4c3f415 Linus Torvalds 2005-04-16 815 for (idx = 0; idx < 32; idx++) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 816 if (!(mixer->mask_recsrc & (1
<< idx)))
^1da177e4c3f415 Linus Torvalds 2005-04-16 817 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 818 pslot = &mixer->slots[idx];
9fe856e47e17512 Joe Perches 2010-09-04 819 slot = pslot->private_data;
^1da177e4c3f415 Linus Torvalds 2005-04-16 820 if (slot->signature !=
SNDRV_MIXER_OSS_SIGNATURE)
^1da177e4c3f415 Linus Torvalds 2005-04-16 821 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 822 if (!(slot->present &
SNDRV_MIXER_OSS_PRESENT_CAPTURE))
^1da177e4c3f415 Linus Torvalds 2005-04-16 823 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 824 if (slot->capture_item ==
uctl->value.enumerated.item[0]) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 825 *active_index = idx;
^1da177e4c3f415 Linus Torvalds 2005-04-16 826 break;
^1da177e4c3f415 Linus Torvalds 2005-04-16 827 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 828 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 829 err = 0;
^1da177e4c3f415 Linus Torvalds 2005-04-16 830 __unlock:
^1da177e4c3f415 Linus Torvalds 2005-04-16 831
up_read(&card->controls_rwsem);
838c364ff05c143 Jaroslav Kysela 2010-10-08 @832 __free_only:
^^^^^^^^^^^
Unused
^1da177e4c3f415 Linus Torvalds 2005-04-16 833 kfree(uctl);
^1da177e4c3f415 Linus Torvalds 2005-04-16 834 kfree(uinfo);
^1da177e4c3f415 Linus Torvalds 2005-04-16 835 return err;
^1da177e4c3f415 Linus Torvalds 2005-04-16 836 }
---
0-DAY CI Kernel Test Service, Intel Corporation
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