[PATCH] ASoC: samsung: idma: Check of ioremap return value
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 --- sound/soc/samsung/idma.c | 2 ++ 1 file changed, 2 insertions(+)
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; }
On 28/12/2021 04:40, Jiasheng Jiang wrote:
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
sound/soc/samsung/idma.c | 2 ++ 1 file changed, 2 insertions(+)
Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com
Best regards, Krzysztof
On Tue, 28 Dec 2021 11:40:26 +0800, Jiasheng Jiang wrote:
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.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: samsung: idma: Check of ioremap return value commit: 3ecb46755eb85456b459a1a9f952c52986bce8ec
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 (3)
-
Jiasheng Jiang -
Krzysztof Kozlowski -
Mark Brown