[PATCH 4.1 07/86] iwlwifi: mvm: init card correctly on ctkill exit check

Greg Kroah-Hartman
2015-11-06T19:32:31Z

From: Arik Nemtsov <arik@wizery.com>

commit 1a3fe0b2b6778b7866e2b3f5c9a299d5e9bbd89c upstream.

During the CT-kill exit flow, the card is powered up and partially
initialized to check if the temperature is already low enough.
Unfortunately the init bails early because the CT-kill flag is set.
Make the code bail early only for HW RF-kill, as was intended by the
author. CT-kill is self-imposed and is not really RF-kill.

Fixes: 31b8b343e019 ("iwlwifi: fix RFkill while calibrating")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/iwlwifi/mvm/fw.c | 4 ++--
drivers/net/wireless/iwlwifi/mvm/mvm.h | 5 +++++
2 files changed, 7 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -364,7 +364,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mv
* abort after reading the nvm in case RF Kill is on, we will complete
* the init seq later when RF kill will switch to off
*/
- if (iwl_mvm_is_radio_killed(mvm)) {
+ if (iwl_mvm_is_radio_hw_killed(mvm)) {
IWL_DEBUG_RF_KILL(mvm,
"jump over all phy activities due to RF kill\n");
iwl_remove_notification(&mvm->notif_wait, &calib_wait);
@@ -397,7 +397,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mv
ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
MVM_UCODE_CALIB_TIMEOUT);

- if (ret && iwl_mvm_is_radio_killed(mvm)) {
+ if (ret && iwl_mvm_is_radio_hw_killed(mvm)) {
IWL_DEBUG_RF_KILL(mvm, "RFKILL while calibrating.\n");
ret = 1;
}
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -870,6 +870,11 @@ static inline bool iwl_mvm_is_radio_kill
test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
}

+static inline bool iwl_mvm_is_radio_hw_killed(struct iwl_mvm *mvm)
+{
+ return test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
+}
+
/* Must be called with rcu_read_lock() held and it can only be
* released when mvmsta is not needed anymore.
*/