From: Zeng Heng <zengheng4@xxxxxxxxxx>
[ Upstream commit ec7bf231aaa1bdbcb69d23bc50c753c80fb22429 ]
kasprintf() would return NULL pointer when kmalloc() fail to allocate.
Need to check the return pointer before calling strcmp().
Fixes: 7a824e214e25 ("ASoC: mmp: add audio dma support")
Signed-off-by: Zeng Heng <zengheng4@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221114085629.1910435-1-zengheng4@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/pxa/mmp-pcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c
index 5d520e18e512..99b245e3079a 100644
--- a/sound/soc/pxa/mmp-pcm.c
+++ b/sound/soc/pxa/mmp-pcm.c
@@ -98,7 +98,7 @@ static bool filter(struct dma_chan *chan, void *param)
devname = kasprintf(GFP_KERNEL, "%s.%d", dma_data->dma_res->name,
dma_data->ssp_id);
- if ((strcmp(dev_name(chan->device->dev), devname) == 0) &&
+ if (devname && (strcmp(dev_name(chan->device->dev), devname) == 0) &&
(chan->chan_id == dma_data->dma_res->start)) {
found = true;
}
--
2.35.1
