Re: [PATCH 4/5] media: mtk-vcodec: Add two error cases upon vpu irq handling

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On 06.08.21 08:58, Irui Wang (王瑞) wrote:
On Wed, 2021-08-04 at 16:27 +0200, Dafna Hirschfeld wrote:
1. Fail if the function mtk_vcodec_fw_map_dm_addr
returns ERR pointer.
2. Fail if the state from the vpu msg is either
VEN_IPI_MSG_ENC_STATE_ERROR or VEN_IPI_MSG_ENC_STATE_PART

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@xxxxxxxxxxxxx>
---
  drivers/media/platform/mtk-vcodec/venc_vpu_if.c | 8 ++++++++
  1 file changed, 8 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
b/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
index 32dc844d16f9..234705ba7cd6 100644
--- a/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
+++ b/drivers/media/platform/mtk-vcodec/venc_vpu_if.c
@@ -17,6 +17,8 @@ static int handle_enc_init_msg(struct venc_vpu_inst
*vpu, const void *data)
  	vpu->vsi = mtk_vcodec_fw_map_dm_addr(vpu->ctx->dev->fw_handler,
  					     msg->vpu_inst_addr);
+ if (IS_ERR(vpu->vsi))
+		return PTR_ERR(vpu->vsi);
  	/* Firmware version field value is unspecified on MT8173. */
  	if (vpu->ctx->dev->venc_pdata->chip == MTK_MT8173)
  		return 0;
@@ -42,6 +44,12 @@ static int handle_enc_encode_msg(struct
venc_vpu_inst *vpu, const void *data)
  	vpu->state = msg->state;
  	vpu->bs_size = msg->bs_size;
  	vpu->is_key_frm = msg->is_key_frm;
+	if (vpu->state == VEN_IPI_MSG_ENC_STATE_ERROR ||
+	    vpu->state == VEN_IPI_MSG_ENC_STATE_PART) {
+		mtk_vcodec_err(vpu, "bad ipi-enc-state: %s",
+			       vpu->state ==
VEN_IPI_MSG_ENC_STATE_ERROR ? "ERR" : "PART");
+		return -EINVAL;
+	}

Hi Dafna,

This state check is useless, the enc result will check in
"vpu_enc_ipi_handler".


Hi, thanks for reviewing. I see that the vpu_enc_ipi_handler only test the msg->status
and I see that the states are not tested anywhere except of "skip" state in the h264 enc.

Can't there be a scenario where msg->status is ok but the state is error?
I am testing the vp8 encoder on chromeos and at some point the encoder interrupts stop arriving
so I try to figure out why and report any possible error.

Thanks,
Dafna

Thanks

  	return 0;
  }



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