diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2021-12-28 11:40:26 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 08:46:16 +0100 |
| commit | 1677aad6534dfe8d04c3eb76fdcaef6f50bb1c69 (patch) | |
| tree | 3cdde7069986bc10c0f04a42a8712b8d6dd777df /sound | |
| parent | c132aedd6e7d804281986074f6efa6d27df5dc66 (diff) | |
| download | linux-stable-1677aad6534dfe8d04c3eb76fdcaef6f50bb1c69.tar.gz linux-stable-1677aad6534dfe8d04c3eb76fdcaef6f50bb1c69.tar.bz2 linux-stable-1677aad6534dfe8d04c3eb76fdcaef6f50bb1c69.zip | |
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>
Diffstat (limited to 'sound')
| -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 4ed29ffc1c54..d9cd9350ffbe 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -370,6 +370,8 @@ 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; } |