[Trusty][PATCH 2/3] rtlwifi: rtl8188ee: add msi module parameter

[Adam Lee]

BugLink: http://bugs.launchpad.net/bugs/1296591

The msi module parameter offers an option to enable or disable MSI
interrupts mode. For now, some users report RTL8188EE works only with
MSI on their certain platforms, some others report it works only without
MSI, this parameter will help.

Signed-off-by: Adam Lee <adam.lee at canonical.com>
Signed-off-by: John W. Linville <linville at tuxdriver.com>
(cherry picked from commit 3513d0043c2a34b73b97ad14f01622bb2aa44e74)
Signed-off-by: Adam Lee <adam.lee at canonical.com>
---
 drivers/net/wireless/rtlwifi/rtl8188ee/sw.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c b/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
index 347af1e..79792d4 100644
--- a/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8188ee/sw.c
@@ -93,6 +93,7 @@ int rtl88e_init_sw_vars(struct ieee80211_hw *hw)
 	u8 tid;
 
 	rtl8188ee_bt_reg_init(hw);
+	rtlpci->msi_support = rtlpriv->cfg->mod_params->msi_support;
 
 	rtlpriv->dm.dm_initialgain_enable = 1;
 	rtlpriv->dm.dm_flag = 0;
@@ -266,6 +267,7 @@ static struct rtl_mod_params rtl88ee_mod_params = {
 	.inactiveps = true,
 	.swctrl_lps = false,
 	.fwctrl_lps = true,
+	.msi_support = false,
 	.debug = DBG_EMERG,
 };
 
@@ -382,10 +384,12 @@ module_param_named(debug, rtl88ee_mod_params.debug, int, 0444);
 module_param_named(ips, rtl88ee_mod_params.inactiveps, bool, 0444);
 module_param_named(swlps, rtl88ee_mod_params.swctrl_lps, bool, 0444);
 module_param_named(fwlps, rtl88ee_mod_params.fwctrl_lps, bool, 0444);
+module_param_named(msi, rtl88ee_mod_params.msi_support, bool, 0444);
 MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
 MODULE_PARM_DESC(ips, "Set to 0 to not use link power save (default 1)\n");
 MODULE_PARM_DESC(swlps, "Set to 1 to use SW control power save (default 0)\n");
 MODULE_PARM_DESC(fwlps, "Set to 1 to use FW control power save (default 1)\n");
+MODULE_PARM_DESC(msi, "Set to 1 to use MSI interrupts mode (default 0)\n");
 MODULE_PARM_DESC(debug, "Set debug level (0-5) (default 0)");
 
 static SIMPLE_DEV_PM_OPS(rtlwifi_pm_ops, rtl_pci_suspend, rtl_pci_resume);
-- 
2.0.0