From 458c253b2577959f637befa44e803948f331e4ac Mon Sep 17 00:00:00 2001 From: Jiasheng Jiang Date: Tue, 28 Dec 2021 11:40:26 +0800 Subject: 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 Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20211228034026.1659385-1-jiasheng@iscas.ac.cn Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/samsung/idma.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/soc/samsung') diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c index 65497cd477a5..47f6f5d70853 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -363,6 +363,8 @@ 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; } -- cgit v1.2.3