openbcm

commit e46f25d8056de8d92dd6fb0fdbc331444b38f802
parent f6c24f2f508aeea306a2e9f5ba93f476367d9010
Author: Broadcom SDK Release <sdk.releases@broadcom.com>
Date:   Thu, 11 Jul 2019 16:18:55 -0700

SDK-183655: Don't allow clearing of TOP_TSC_ENABLE during flexport operations

Devices: 56980_A0,56980_B0
Module: link

Symptom:
Flex operation causing link status flap in unrelated port macro

Diffstat:
M
sdk-6.5.16/src/bcm/esw/xgs5/port.c
 | 
8
+++++++-

1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sdk-6.5.16/src/bcm/esw/xgs5/port.c b/sdk-6.5.16/src/bcm/esw/xgs5/port.c
@@ -4758,7 +4758,13 @@ _bcmi_xgs5_pm_enable(int unit, bcmi_xgs5_port_resource_bmp_t *pr_bmp,
         if (enable) {
             rval[i] |= (1 << offset);
         } else {
-            rval[i] &= ~(1 << offset);
+            /* Disabling of TOP_TSC_ENABLE for TH3 causes link flapping in
+             * PMs not being modified, so do not allow TOP_TSC_ENABLE
+             * to be disabled during TH3 flex
+             */
+            if (!SOC_IS_TOMAHAWK3(unit)) {
+                rval[i] &= ~(1 << offset);
+            }
         }
         count[i]++;
         /* If shut down or power up many port blocks at the same time, PCI