media: coda: jpeg: Add check for kmalloc

As kmalloc can return NULL pointer, it should be better to
check the return value and return error, same as
coda_jpeg_decode_header.

Fixes: 96f6f62c4656 ("media: coda: jpeg: add CODA960 JPEG encoder support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/chips-media/coda-jpeg.c b/drivers/media/platform/chips-media/coda-jpeg.c
index 435e703..ba8f410 100644 (file)
--- a/drivers/media/platform/chips-media/coda-jpeg.c
+++ b/drivers/media/platform/chips-media/coda-jpeg.c
@@ -1052,10 +1052,16 @@ static int coda9_jpeg_start_encoding(struct coda_ctx *ctx)
                v4l2_err(&dev->v4l2_dev, "error loading Huffman tables\n");
                return ret;
        }
-       if (!ctx->params.jpeg_qmat_tab[0])
+       if (!ctx->params.jpeg_qmat_tab[0]) {
                ctx->params.jpeg_qmat_tab[0] = kmalloc(64, GFP_KERNEL);
-       if (!ctx->params.jpeg_qmat_tab[1])
+               if (!ctx->params.jpeg_qmat_tab[0])
+                       return -ENOMEM;
+       }
+       if (!ctx->params.jpeg_qmat_tab[1]) {
                ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL);
+               if (!ctx->params.jpeg_qmat_tab[1])
+                       return -ENOMEM;
+       }
        coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality);
 
        return 0;