FAILED: Patch "media: venus: vdec: fix error state assignment for zero bytesused" failed to apply to 6.1-stable tree

The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 93ecd6ee95c38cb533fa25f48d3c1c8cb69f410f Mon Sep 17 00:00:00 2001
From: Renjiang Han <[email protected]>
Date: Thu, 11 Dec 2025 15:20:39 +0530
Subject: [PATCH] media: venus: vdec: fix error state assignment for zero
bytesused

When hfi_session_flush is issued, all queued buffers are returned to the V4L2 driver. Some of these buffers are not processed and have bytesused = 0. Currently, the driver marks such buffers as error even during drain operations, which can incorrectly flag EOS buffers.

Only capture buffers with zero payload (and not EOS) should be marked with VB2_BUF_STATE_ERROR. The check is performed inside the non-EOS branch to ensure correct handling.

---
 drivers/media/platform/qcom/venus/vdec.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

index 4a6641fdffcf7..d0bd2d86a31f9 100644
@@ -1440,10 +1440,10 @@ static void vdec_buf_done(struct venus_inst *inst, unsigned int buf_type,
 				inst->drain_active = false;
 				inst->codec_state = VENUS_DEC_STATE_STOPPED;
 			}
+		} else {
+			if (!bytesused)
+				state = VB2_BUF_STATE_ERROR;
 		}
-
-		if (!bytesused)
-			state = VB2_BUF_STATE_ERROR;
 	} else {
 		vbuf->sequence = inst->sequence_out++;
 	}

2.51.0