6.6-stable review patch. If anyone has any objections, please let me know.
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From: Colin Ian King colin.i.king@gmail.com
[ Upstream commit 1382d8b55129875b2e07c4d2a7ebc790183769ee ]
In the case where __lpass_get_dmactl_handle is called and the driver id dai_id is invalid the pointer dmactl is not being assigned a value, and dmactl contains a garbage value since it has not been initialized and so the null check may not work. Fix this to initialize dmactl to NULL. One could argue that modern compilers will set this to zero, but it is useful to keep this initialized as per the same way in functions __lpass_platform_codec_intf_init and lpass_cdc_dma_daiops_hw_params.
Cleans up clang scan build warning: sound/soc/qcom/lpass-cdc-dma.c:275:7: warning: Branch condition evaluates to a garbage value [core.uninitialized.Branch]
Fixes: b81af585ea54 ("ASoC: qcom: Add lpass CPU driver for codec dma control") Signed-off-by: Colin Ian King colin.i.king@gmail.com Link: https://msgid.link/r/20240221134804.3475989-1-colin.i.king@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/qcom/lpass-cdc-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/qcom/lpass-cdc-dma.c b/sound/soc/qcom/lpass-cdc-dma.c index 8221e2cbe35c1..4d5d147b47db0 100644 --- a/sound/soc/qcom/lpass-cdc-dma.c +++ b/sound/soc/qcom/lpass-cdc-dma.c @@ -258,7 +258,7 @@ static int lpass_cdc_dma_daiops_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream); - struct lpaif_dmactl *dmactl; + struct lpaif_dmactl *dmactl = NULL; int ret = 0, id;
switch (cmd) {