Patch "media: mediatek: vcodec: Return NULL if no vdec_fb is found" has been added to the 4.14-stable tree

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This is a note to let you know that I've just added the patch titled

    media: mediatek: vcodec: Return NULL if no vdec_fb is found

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     media-mediatek-vcodec-return-null-if-no-vdec_fb-is-f.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 181aad1af2c53a474657e941e8443377bbca28f5
Author: Irui Wang <irui.wang@xxxxxxxxxxxx>
Date:   Wed Jul 5 17:14:41 2023 +0800

    media: mediatek: vcodec: Return NULL if no vdec_fb is found
    
    [ Upstream commit dfa2d6e07432270330ae191f50a0e70636a4cd2b ]
    
    "fb_use_list" is used to store used or referenced frame buffers for
    vp9 stateful decoder. "NULL" should be returned when getting target
    frame buffer failed from "fb_use_list", not a random unexpected one.
    
    Fixes: f77e89854b3e ("[media] vcodec: mediatek: Add Mediatek VP9 Video Decoder Driver")
    Signed-off-by: Irui Wang <irui.wang@xxxxxxxxxxxx>
    Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
index bc8349bc2e80c..2c0d89a46410a 100644
--- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c
@@ -230,10 +230,11 @@ static struct vdec_fb *vp9_rm_from_fb_use_list(struct vdec_vp9_inst
 		if (fb->base_y.va == addr) {
 			list_move_tail(&node->list,
 				       &inst->available_fb_node_list);
-			break;
+			return fb;
 		}
 	}
-	return fb;
+
+	return NULL;
 }
 
 static void vp9_add_to_fb_free_list(struct vdec_vp9_inst *inst,



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