rtl8187: Fix driver to return TX retry info for RTL8187L

Current code for the RTL8187 is not returning valid retry information, thus the
rate-setting mechanism is not functioning. As a further complication, this info
is only obtained by reading a register, which cannot be read while in interrupt
context.

This patch implements the TX status return to mac80211 through the use of a
work queue.

One additional problem is that the driver currently enables the rate fallback
mechanism of the device, which conflicts with the mac80211 rate-setting
algorithm. This version of the patch disables rate fallback.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Tested-by: Martín Ernesto Barreyro <barreyromartin@gmail.com>
Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/rtl818x/rtl8187.h b/drivers/net/wireless/rtl818x/rtl8187.h
index 3b1e1c2aad26..9718f61809cf 100644
--- a/drivers/net/wireless/rtl818x/rtl8187.h
+++ b/drivers/net/wireless/rtl818x/rtl8187.h
@@ -100,6 +100,8 @@ struct rtl8187_priv {
         struct usb_device *udev;
         u32 rx_conf;
         struct usb_anchor anchored;
+        struct delayed_work work;
+        struct ieee80211_hw *dev;
         u16 txpwr_base;
         u8 asic_rev;
         u8 is_rtl8187b;
@@ -117,7 +119,7 @@ struct rtl8187_priv {
         struct {
                 __le64 buf;
                 struct sk_buff_head queue;
-        } b_tx_status;
+        } b_tx_status; /* This queue is used by both -b and non-b devices */
 };
 
 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data);