iwlwifi: grap nic access before accessing periphery registers

We need to grap nic access before accessing periphery registers.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index c5b104fd149c..f3d139b663e6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -241,9 +241,11 @@ static void iwl5000_nic_config(struct iwl_priv *priv)
          * (PCIe power is lost before PERST# is asserted),
          * causing ME FW to lose ownership and not being able to obtain it back.
          */
-         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+        iwl_grab_nic_access(priv);
+        iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
                                 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
                                 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
+        iwl_release_nic_access(priv);
 
         spin_unlock_irqrestore(&priv->lock, flags);
 }