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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2021-12-28 11:40:26 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 09:04:23 +0100 |
| commit | f93d2586a4c3e3fefabfd65ed15247e5fe03519b (patch) | |
| tree | e7fda8bdea27d7fe24f64698332afa96d6f64fb9 /sound | |
| parent | e4f5f2767cd2c14fcb7b2c16dac5fe21888de9c2 (diff) | |
| download | linux-stable-f93d2586a4c3e3fefabfd65ed15247e5fe03519b.tar.gz linux-stable-f93d2586a4c3e3fefabfd65ed15247e5fe03519b.tar.bz2 linux-stable-f93d2586a4c3e3fefabfd65ed15247e5fe03519b.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 b1f09b942410..e397f5e10e33 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -369,6 +369,8 @@ 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; } |