diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2021-12-28 06:40:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 12:54:08 +0300 |
| commit | 696a50abbc7c26e4ccad33955befa0bc4943d42e (patch) | |
| tree | 69395ba6ed6cd705e76ac1009d9e4ad06cb3d732 | |
| parent | d491a2c2cf96f9f3d855cf0bcd807d48ccb98e81 (diff) | |
| download | linux-696a50abbc7c26e4ccad33955befa0bc4943d42e.tar.xz | |
ASoC: samsung: idma: Check of ioremap return value
[ Upstream commit 3ecb46755eb85456b459a1a9f952c52986bce8ec ]
Because of the potential failure of the ioremap(), the buf->area could
be NULL.
Therefore, we need to check it and return -ENOMEM in order to transfer
the error.
Fixes: f09aecd50f39 ("ASoC: SAMSUNG: Add I2S0 internal dma driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211228034026.1659385-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | sound/soc/samsung/idma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c index 66bcc2f97544..c3f1b054e238 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -360,6 +360,8 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream) buf->addr = idma.lp_tx_addr; buf->bytes = idma_hardware.buffer_bytes_max; buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes); + if (!buf->area) + return -ENOMEM; return 0; } |