iwlwifi: do not use shadow registers by default

commit 66a770729a5cdd24efed8afa5258f81232d8bba2 upstream.

Shadow registers in the device are meant to
allow the driver to update certain device
registers without needing to wake up all
components of the device. However, using
this feature in the device causes
communication between the driver and the
device to become unreliable, resulting in
host command timeouts.

Disable this feature by default till a fix is
available for the bug.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
index ea10862..4da050f 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-2000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
@@ -183,7 +183,7 @@ static const struct iwl_base_params iwl2000_base_params = {
        .chain_noise_scale = 1000,
        .wd_timeout = IWL_DEF_WD_TIMEOUT,
        .max_event_log_size = 512,
-       .shadow_reg_enable = true,
+       .shadow_reg_enable = false, /* TODO: fix bugs using this feature */
        .hd_v2 = true,
 };
 
@@ -202,7 +202,7 @@ static const struct iwl_base_params iwl2030_base_params = {
        .chain_noise_scale = 1000,
        .wd_timeout = IWL_LONG_WD_TIMEOUT,
        .max_event_log_size = 512,
-       .shadow_reg_enable = true,
+       .shadow_reg_enable = false, /* TODO: fix bugs using this feature */
        .hd_v2 = true,
 };
 

diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index f0c9150..9f71b85 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -282,7 +282,7 @@ static const struct iwl_base_params iwl6000_base_params = {
        .chain_noise_scale = 1000,
        .wd_timeout = IWL_DEF_WD_TIMEOUT,
        .max_event_log_size = 512,
-       .shadow_reg_enable = true,
+       .shadow_reg_enable = false, /* TODO: fix bugs using this feature */
 };
 
 static const struct iwl_base_params iwl6050_base_params = {
@@ -299,7 +299,7 @@ static const struct iwl_base_params iwl6050_base_params = {
        .chain_noise_scale = 1500,
        .wd_timeout = IWL_DEF_WD_TIMEOUT,
        .max_event_log_size = 1024,
-       .shadow_reg_enable = true,
+       .shadow_reg_enable = false, /* TODO: fix bugs using this feature */
 };
 
 static const struct iwl_base_params iwl6000_g2_base_params = {
@@ -316,7 +316,7 @@ static const struct iwl_base_params iwl6000_g2_base_params = {
        .chain_noise_scale = 1000,
        .wd_timeout = IWL_LONG_WD_TIMEOUT,
        .max_event_log_size = 512,
-       .shadow_reg_enable = true,
+       .shadow_reg_enable = false, /* TODO: fix bugs using this feature */
 };
 
 static const struct iwl_ht_params iwl6000_ht_params = {