iwlwifi: print contents of control register when error occurs
hopefully the register contents will guide us to why this failure occured
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-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h
index c7b8e5b..083ea1f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-io.h
+++ b/drivers/net/wireless/iwlwifi/iwl-io.h
@@ -156,6 +156,7 @@
static inline int _iwl_grab_nic_access(struct iwl_priv *priv)
{
int ret;
+ u32 val;
#ifdef CONFIG_IWLWIFI_DEBUG
if (atomic_read(&priv->restrict_refcnt))
return 0;
@@ -167,7 +168,8 @@
(CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
if (ret < 0) {
- IWL_ERR(priv, "MAC is in deep sleep!\n");
+ val = _iwl_read32(priv, CSR_GP_CNTRL);
+ IWL_ERR(priv, "MAC is in deep sleep!. CSR_GP_CNTRL = 0x%08X\n", val);
return -EIO;
}