[PATCH v2] media: mediatek: vcodec: Handle invalid encoder vsi

[Irui Wang]

Handle invalid encoder vsi in vpu_enc_init to ensure the encoder
vsi is valid for future use.

Fixes: 1972e32431ed ("media: mediatek: vcodec: Fix possible invalid memory access for encoder")

Signed-off-by: Irui Wang <irui.wang@xxxxxxxxxxxx>
---
changed with v1:
 - add Fixes tag
 - move vsi check to vpu_enc_init
 - update commit message
---
 drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
index d299cc2962a5..39e8f3ac53ca 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
@@ -153,6 +153,11 @@ int vpu_enc_init(struct venc_vpu_inst *vpu)
 		return -EINVAL;
 	}
 
+	if (IS_ERR_OR_NULL(vpu->vsi)) {
+		mtk_venc_err(vpu->ctx, "invalid venc vsi");
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
-- 
2.18.0