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path: root/drivers/net/wireless/b43
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Diffstat (limited to 'drivers/net/wireless/b43')
-rw-r--r--drivers/net/wireless/b43/b43.h1
-rw-r--r--drivers/net/wireless/b43/main.c13
2 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index fe3bf949199..c484cc25389 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -115,6 +115,7 @@
#define B43_MMIO_TSF_2 0x636 /* core rev < 3 only */
#define B43_MMIO_TSF_3 0x638 /* core rev < 3 only */
#define B43_MMIO_RNG 0x65A
+#define B43_MMIO_IFSSLOT 0x684 /* Interframe slot time */
#define B43_MMIO_IFSCTL 0x688 /* Interframe space control */
#define B43_MMIO_IFSCTL_USE_EDCF 0x0004
#define B43_MMIO_POWERUP_DELAY 0x6A8
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 4c41cfe44f2..490fb45d1d0 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -628,10 +628,17 @@ static void b43_upload_card_macaddress(struct b43_wldev *dev)
static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
{
/* slot_time is in usec. */
- if (dev->phy.type != B43_PHYTYPE_G)
+ /* This test used to exit for all but a G PHY. */
+ if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
return;
- b43_write16(dev, 0x684, 510 + slot_time);
- b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
+ b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
+ /* Shared memory location 0x0010 is the slot time and should be
+ * set to slot_time; however, this register is initially 0 and changing
+ * the value adversely affects the transmit rate for BCM4311
+ * devices. Until this behavior is unterstood, delete this step
+ *
+ * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
+ */
}
static void b43_short_slot_timing_enable(struct b43_wldev *dev)