media: coda: Add check for dcoda_iram_alloc

[ Upstream commit 6b8082238fb8bb20f67e46388123e67a5bbc558d ]

As the coda_iram_alloc may return NULL pointer,
it should be better to check the return value
in order to avoid NULL poineter dereference,
same as the others.

Fixes: b313bcc9a467 ("[media] coda: simplify IRAM setup")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index c484c00..2846088 100644 (file)
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -852,7 +852,7 @@ static void coda_setup_iram(struct coda_ctx *ctx)
                /* Only H.264BP and H.263P3 are considered */
                iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, w64);
                iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, w64);
-               if (!iram_info->buf_dbk_c_use)
+               if (!iram_info->buf_dbk_y_use || !iram_info->buf_dbk_c_use)
                        goto out;
                iram_info->axi_sram_use |= dbk_bits;
 
@@ -876,7 +876,7 @@ static void coda_setup_iram(struct coda_ctx *ctx)
 
                iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, w128);
                iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, w128);
-               if (!iram_info->buf_dbk_c_use)
+               if (!iram_info->buf_dbk_y_use || !iram_info->buf_dbk_c_use)
                        goto out;
                iram_info->axi_sram_use |= dbk_bits;