msm: camera: cpas: Set AHB clock rate only if a client is streamed on

Currently the ahb clock rate is set as part of cpas_start for a
given client. In order to set this rate, any camera gdsc needs to
be enabled. This change adds a check to allow setting the clk rate
only if the gdsc regulator has been enabled to avoid NoC timeouts.

CRs-Fixed: 2671048
Change-Id: I6551c8c648ae298dca97f0e35ba7c9ca83b5a2cd
Signed-off-by: Karthik Anantha Ram <[email protected]>

drivers/cam_cpas/cam_cpas_hw.c

@@ -1030,12 +1030,15 @@ static int cam_cpas_util_apply_client_ahb_vote(struct cam_hw_info *cpas_hw,
 		}
 	}
 
-	rc = cam_soc_util_set_clk_rate_level(&cpas_hw->soc_info, highest_level);
-	if (rc) {
-		CAM_ERR(CAM_CPAS,
-			"Failed in scaling clock rate level %d for AHB",
+	if (cpas_core->streamon_clients) {
+		rc = cam_soc_util_set_clk_rate_level(&cpas_hw->soc_info,
 			highest_level);
-		goto unlock_bus_client;
+		if (rc) {
+			CAM_ERR(CAM_CPAS,
+				"Failed in scaling clock rate level %d for AHB",
+				highest_level);
+			goto unlock_bus_client;
+		}
 	}
 
 	if (applied_level)