msm: camera: isp: Transition to HALT state prior to HW stop

In case of any error IRQs encountered during stop, there is
no need to notify them to UMD since the entire pipeline
would be reset prior to next session start. With this change
we transition to HALT state and then issue stop.

CRs-Fixed: 2825121
Change-Id: I9535439d1a29e3b6f8da968b60e5b2b5bc32c1bf
Signed-off-by: Karthik Anantha Ram <[email protected]>

drivers/cam_isp/cam_isp_context.c

@@ -5362,6 +5362,11 @@ static int __cam_isp_ctx_stop_dev_in_activated_unlock(
 		(struct cam_isp_context *) ctx->ctx_priv;
 	struct cam_isp_stop_args         stop_isp;
 
+	/* Mask off all the incoming hardware events */
+	spin_lock_bh(&ctx->lock);
+	ctx_isp->substate_activated = CAM_ISP_CTX_ACTIVATED_HALT;
+	spin_unlock_bh(&ctx->lock);
+
 	/* stop hw first */
 	if (ctx_isp->hw_ctx) {
 		stop.ctxt_to_hw_map = ctx_isp->hw_ctx;
@@ -5374,10 +5379,6 @@ static int __cam_isp_ctx_stop_dev_in_activated_unlock(
 			&stop);
 	}
 
-	/* Mask off all the incoming hardware events */
-	spin_lock_bh(&ctx->lock);
-	ctx_isp->substate_activated = CAM_ISP_CTX_ACTIVATED_HALT;
-	spin_unlock_bh(&ctx->lock);
 	CAM_DBG(CAM_ISP, "next Substate[%s]",
 		__cam_isp_ctx_substate_val_to_type(
 		ctx_isp->substate_activated));