From 60f8cc60fa41b8c44662a3a4d99862e3b81cfa6f Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 14 Sep 2011 21:24:20 +0200
Subject: [PATCH] ath9k_hw: do not recalculate the descriptor checksum in
ar9003_hw_fill_txdesc
Reduces the number of accesses to uncached descriptor memory.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/ath/ath9k/ar9003_mac.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index d08ab930e4303..c3179d9bdc385 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -207,8 +207,7 @@ static void ar9003_hw_fill_txdesc(struct ath_hw *ah, void *ds, u32 seglen,
ads->ctl3 &= AR_BufLen;
/* Fill in pointer checksum and descriptor id */
- ads->ctl10 = ar9003_calc_ptr_chksum(ads);
- ads->ctl10 |= (descid << AR_TxDescId_S);
+ ads->ctl10 = (descid << AR_TxDescId_S);
if (is_firstseg) {
ads->ctl12 |= (is_lastseg ? 0 : AR_TxMore);
--
GitLab