iwlwifi: fix "MAC in deep sleep" error

This patch fixes the misue of CSR_GP_CNTRL with CSR_RESET address
in polling the CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY bit in
iwl4965_apm_reset(). This causes "MAC in deep sleep" error sometimes.
The patch also fixes the timeout value and the iwl_poll_bit() return
value check.

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

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 87c7bb0..c961e2c 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -482,11 +482,11 @@ static int iwl4965_apm_reset(struct iwl_priv *priv)
 
        iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 
-       ret = iwl_poll_bit(priv, CSR_RESET,
+       ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
-                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
+                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 
-       if (ret)
+       if (ret < 0)
                goto out;
 
        udelay(10);