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authorMichael Buesch <mb@bu3sch.de>2009-09-12 00:52:48 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-09-23 11:35:44 -0400
commit09ebe2f94373e95952ed6340b0a5d21739eb99da (patch)
tree514473303a20ab15fa1ef5100a00c79ac3ad443e /drivers/net
parent990b86f4f9c54f83085d4136498ac44719b17654 (diff)
b43: Disable PMQ mechanism
This reduces IRQ pressure by about one third on a saturated link by disabling the PMQ mechanism. We currently don't use that mechanism. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/b43/main.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 6468bbeba68..7fa947ca7c3 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2675,6 +2675,20 @@ static void b43_adjust_opmode(struct b43_wldev *dev)
cfp_pretbtt = 50;
}
b43_write16(dev, 0x612, cfp_pretbtt);
+
+ /* FIXME: We don't currently implement the PMQ mechanism,
+ * so always disable it. If we want to implement PMQ,
+ * we need to enable it here (clear DISCPMQ) in AP mode.
+ */
+ if (0 /* ctl & B43_MACCTL_AP */) {
+ b43_write32(dev, B43_MMIO_MACCTL,
+ b43_read32(dev, B43_MMIO_MACCTL)
+ & ~B43_MACCTL_DISCPMQ);
+ } else {
+ b43_write32(dev, B43_MMIO_MACCTL,
+ b43_read32(dev, B43_MMIO_MACCTL)
+ | B43_MACCTL_DISCPMQ);
+ }
}
static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)