From: Dikshita Agarwal <quic_dikshita@quicinc.com>
Date: Mon, 25 Aug 2025 07:00:32 +0000 (+0530)
Subject: media: iris: Simplify session stop logic by relying on vb2 checks
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0fe10666d3b4d0757b7f4671892523855ee68cc8;p=thirdparty%2Fkernel%2Fstable.git

media: iris: Simplify session stop logic by relying on vb2 checks

Remove earlier complex conditional checks in the non-streaming path that
attempted to verify if stop was called on a plane that was previously
started. These explicit checks are redundant, as vb2 already ensures
that stop is only called on ports that have been started, maintaining
correct buffer state management.

Fixes: 11712ce70f8e ("media: iris: implement vb2 streaming ops")
Cc: stable@vger.kernel.org
Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Tested-by: Vikash Garodia <quic_vgarodia@quicinc.com> # X1E80100
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-HDK
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-HDK
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # x1e80100-crd
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---

diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
index 5fc30d54af4dc..3e41c8cb620eb 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
@@ -184,11 +184,25 @@ static int iris_hfi_gen1_session_stop(struct iris_inst *inst, u32 plane)
 	u32 flush_type = 0;
 	int ret = 0;
 
-	if ((V4L2_TYPE_IS_OUTPUT(plane) &&
-	     inst->state == IRIS_INST_INPUT_STREAMING) ||
-	    (V4L2_TYPE_IS_CAPTURE(plane) &&
-	     inst->state == IRIS_INST_OUTPUT_STREAMING) ||
-	    inst->state == IRIS_INST_ERROR) {
+	if (inst->state == IRIS_INST_STREAMING) {
+		if (V4L2_TYPE_IS_OUTPUT(plane))
+			flush_type = HFI_FLUSH_ALL;
+		else if (V4L2_TYPE_IS_CAPTURE(plane))
+			flush_type = HFI_FLUSH_OUTPUT;
+
+		reinit_completion(&inst->flush_completion);
+
+		flush_pkt.shdr.hdr.size = sizeof(struct hfi_session_flush_pkt);
+		flush_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_FLUSH;
+		flush_pkt.shdr.session_id = inst->session_id;
+		flush_pkt.flush_type = flush_type;
+
+		ret = iris_hfi_queue_cmd_write(core, &flush_pkt, flush_pkt.shdr.hdr.size);
+		if (!ret) {
+			inst->flush_responses_pending++;
+			ret = iris_wait_for_session_response(inst, true);
+		}
+	} else {
 		reinit_completion(&inst->completion);
 		iris_hfi_gen1_packet_session_cmd(inst, &pkt, HFI_CMD_SESSION_STOP);
 		ret = iris_hfi_queue_cmd_write(core, &pkt, pkt.shdr.hdr.size);
@@ -207,24 +221,6 @@ static int iris_hfi_gen1_session_stop(struct iris_inst *inst, u32 plane)
 					 VB2_BUF_STATE_ERROR);
 		iris_helper_buffers_done(inst, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
 					 VB2_BUF_STATE_ERROR);
-	} else if (inst->state == IRIS_INST_STREAMING) {
-		if (V4L2_TYPE_IS_OUTPUT(plane))
-			flush_type = HFI_FLUSH_ALL;
-		else if (V4L2_TYPE_IS_CAPTURE(plane))
-			flush_type = HFI_FLUSH_OUTPUT;
-
-		reinit_completion(&inst->flush_completion);
-
-		flush_pkt.shdr.hdr.size = sizeof(struct hfi_session_flush_pkt);
-		flush_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_FLUSH;
-		flush_pkt.shdr.session_id = inst->session_id;
-		flush_pkt.flush_type = flush_type;
-
-		ret = iris_hfi_queue_cmd_write(core, &flush_pkt, flush_pkt.shdr.hdr.size);
-		if (!ret) {
-			inst->flush_responses_pending++;
-			ret = iris_wait_for_session_response(inst, true);
-		}
 	}
 
 	return ret;