[PATCH] ASoC: component: suppress uninitialized-variable warning
Old versions of gcc (tested on gcc-4.8) produce a warning for correct code:
sound/soc/soc-compress.c: In function 'soc_compr_open': sound/soc/soc-compress.c:75:28: error: 'component' is used uninitialized in this function [-Werror=uninitialized] struct snd_soc_component *component, *save = NULL;
Change the for_each_rtd_components() macro to ensure 'component' gets initialized to a value the compiler does not complain about.
Signed-off-by: Arnd Bergmann arnd@arndb.de --- include/sound/soc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 907afbc652f2..69a82487fa9b 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1179,7 +1179,7 @@ struct snd_soc_pcm_runtime { #define asoc_rtd_to_codec(rtd, n) (rtd)->dais[n + (rtd)->num_cpus]
#define for_each_rtd_components(rtd, i, component) \ - for ((i) = 0; \ + for ((i) = 0, component = NULL; \ ((i) < rtd->num_components) && ((component) = rtd->components[i]);\ (i)++) #define for_each_rtd_cpu_dais(rtd, i, dai) \
On Tue, 28 Apr 2020 23:47:31 +0200, Arnd Bergmann wrote:
Old versions of gcc (tested on gcc-4.8) produce a warning for correct code:
sound/soc/soc-compress.c: In function 'soc_compr_open': sound/soc/soc-compress.c:75:28: error: 'component' is used uninitialized in this function [-Werror=uninitialized] struct snd_soc_component *component, *save = NULL;
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.8
Thanks!
[1/1] ASoC: component: suppress uninitialized-variable warning commit: be16a0f0dc8fab8e25d9cdbeb4f8f28afc9186d2
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
participants (2)
-
Arnd Bergmann -
Mark Brown