[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20220124183928.707294544@linuxfoundation.org>
Date: Mon, 24 Jan 2022 19:42:27 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>,
Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 052/114] ASoC: samsung: idma: Check of ioremap return value
From: Jiasheng Jiang <jiasheng@...as.ac.cn>
[ 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@...as.ac.cn>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Link: https://lore.kernel.org/r/20211228034026.1659385-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
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 4ed29ffc1c54e..d9cd9350ffbe2 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;
}
--
2.34.1
Powered by blists - more mailing lists