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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>
This commit is contained in:
Tomas Winkler 2008-08-04 16:00:47 +08:00 committed by John W. Linville
parent 1465256236
commit 2d3db67951
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/iwlwifi/iwl-5000.c
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@ -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);
}