Mark
On 10/10/19 11:41 AM, kbuild test robot wrote:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5
head: c173dba44c2d2ec2adaa4e607e9729b74236bd57
commit: c173dba44c2d2ec2adaa4e607e9729b74236bd57 [122/122] ASoC: tas2562: Introduce the TAS2562 amplifier
reproduce:
# apt-get install sparse
# sparse version: v0.6.1-rc1-42-g38eda53-dirty
git checkout c173dba44c2d2ec2adaa4e607e9729b74236bd57
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
sparse warnings: (new ones prefixed by >>)
sound/soc/codecs/tas2562.c:195:14: sparse: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/codecs/tas2562.c:202:14: sparse: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/codecs/tas2562.c:209:14: sparse: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/codecs/tas2562.c:246:58: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int bitwidth @@ got restricted snd_pcm_formint bitwidth @@
sound/soc/codecs/tas2562.c:246:58: sparse: expected int bitwidth
sound/soc/codecs/tas2562.c:246:58: sparse: got restricted snd_pcm_format_t
sound/soc/codecs/tas2562.c:472:39: sparse: sparse: restricted snd_pcm_format_t degrades to integer
vim +195 sound/soc/codecs/tas2562.c
189
190 static int tas2562_set_bitwidth(struct tas2562_data *tas2562, int bitwidth)
The only fix I can see here is to change bitwidth to snd_pcm_format_t as
opposed to an integer.
But that still gives this sparse warning. The way the code below is
written to be consistent throughout the drivers so are these warnings
false positives?
I get similar ones for the tas2770 as well
Dan
191 {
192 int ret;
193
194 switch (bitwidth) {
> 195 case SNDRV_PCM_FORMAT_S16_LE:
<snip>
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