summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorEliad Peller <eliad@wizery.com>2015-09-10 15:00:22 +0300
committerEmmanuel Grumbach <emmanuel.grumbach@intel.com>2015-10-25 13:45:05 +0200
commit053225de121a950b94a1989802c22895797ffbfc (patch)
tree5f43d03b93513720d843099098c56aa9f16b2c91
parentcd55ccea5978d7e87852be3ea5daf89c95b7e78a (diff)
downloadop-kernel-dev-053225de121a950b94a1989802c22895797ffbfc.zip
op-kernel-dev-053225de121a950b94a1989802c22895797ffbfc.tar.gz
iwlwifi: avoid read/write operations if the bus is dead
Recovery takes too much time if the bus is dead (each timeout is 2000ms, etc.). Explicitly skip fw dump in this case, as it will result in garbage data (and might take signifcant time) Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-trans.h2
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/mac80211.c6
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index bb51b6f..6f76525 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -409,6 +409,7 @@ enum iwl_d3_status {
* @STATUS_TRANS_GOING_IDLE: shutting down the trans, only special commands
* are sent
* @STATUS_TRANS_IDLE: the trans is idle - general commands are not to be sent
+ * @STATUS_TRANS_DEAD: trans is dead - avoid any read/write operation
*/
enum iwl_trans_status {
STATUS_SYNC_HCMD_ACTIVE,
@@ -419,6 +420,7 @@ enum iwl_trans_status {
STATUS_FW_ERROR,
STATUS_TRANS_GOING_IDLE,
STATUS_TRANS_IDLE,
+ STATUS_TRANS_DEAD,
};
/**
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 5ce29ff..8e69ab2 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -1137,6 +1137,12 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
lockdep_assert_held(&mvm->mutex);
+ /* there's no point in fw dump if the bus is dead */
+ if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
+ IWL_ERR(mvm, "Skip fw error dump since bus is dead\n");
+ return;
+ }
+
if (mvm->fw_dump_trig &&
mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
monitor_dump_only = true;
OpenPOWER on IntegriCloud