media: visl: check if ctx->tpg_str_buf allocation failed

The result of ctx->tpg_str_buf = kzalloc(TPG_STR_BUF_SZ, GFP_KERNEL); was
never checked. Add this.

Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/test-drivers/visl/visl-core.c b/drivers/media/test-drivers/visl/visl-core.c
index 127ab18bce99fcb73754f57fa2c86962c3d288f6..5e9bdd425d4a307639a5a61b68e8aa3430cd42d2 100644 (file)
--- a/drivers/media/test-drivers/visl/visl-core.c
+++ b/drivers/media/test-drivers/visl/visl-core.c
@@ -339,6 +339,10 @@ static int visl_open(struct file *file)
        }
 
        ctx->tpg_str_buf = kzalloc(TPG_STR_BUF_SZ, GFP_KERNEL);
+       if (!ctx->tpg_str_buf) {
+               rc = -ENOMEM;
+               goto free_ctx;
+       }
 
        v4l2_fh_init(&ctx->fh, video_devdata(file));
        ctx->dev = dev;