commit 451ebb90c74b30665cceceb544898eec186a5450
author Sameer Thalappil <sameert@qca.qualcomm.com> Fri Jun 28 15:49:58 2013 -0700
committer Gopichand Nakkala <gnakkala@qca.qualcomm.com> Fri Jul 05 09:43:52 2013 -0700
tree 9d5be66844c8d1b33f1855c10c47194604b5e43f
parent c03c5a80ea419b512d70fe8f3af8254f56bbd102

wlan: Invoke panic if SSR never completed

Driver unload should not spin forever, if SSR was never completed invoke
panic after retrying for 30 seconds. Also invoke panic on SSR re-init
failure; invoking panic will help to collect more information on the
SSR failure.

Change-Id: Iaccceae20bd9e9321a9e6b4e13f37d759064d294
CRs-Fixed: 505738

CORE/HDD/src/wlan_hdd_main.c

diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index c02fb76..05b4971 100644
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -6134,6 +6134,7 @@
 {
    hdd_context_t *pHddCtx = NULL;
    v_CONTEXT_t pVosContext = NULL;
+   int retry = 0;
 
    pr_info("%s: unloading driver v%s\n", WLAN_MODULE_NAME, QWLAN_VERSIONSTR);
 
@@ -6155,11 +6156,18 @@
    }
    else
    {
-      /* module exit should never proceed if SSR is not completed */
-      while(isWDresetInProgress()){
-         VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s:SSR in Progress; block rmmod for 1 second!!!",__func__);
+      while(isWDresetInProgress()) {
+         VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+              "%s:SSR in Progress; block rmmod for 1 second!!!", __func__);
          msleep(1000);
-       }
+
+         if (retry++ == HDD_MOD_EXIT_SSR_MAX_RETRIES) {
+            VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+              "%s:SSR never completed, fatal error", __func__);
+            VOS_BUG(0);
+         }
+      }
+
 
       pHddCtx->isLoadUnloadInProgress = TRUE;
       vos_set_load_unload_in_progress(VOS_MODULE_ID_VOSS, TRUE);