From: Arnd Bergmann <arnd@xxxxxxxx> [ Upstream commit be16a0f0dc8fab8e25d9cdbeb4f8f28afc9186d2 ] 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@xxxxxxxx> Link: https://lore.kernel.org/r/20200428214754.3925368-1-arnd@xxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 946f88a6c63d1..e0371e70242d5 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1177,7 +1177,7 @@ 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) \ -- 2.25.1
