From: Felix Fietkau Date: Wed, 14 Sep 2011 19:24:20 +0000 (+0200) Subject: ath9k_hw: do not recalculate the descriptor checksum in ar9003_hw_fill_txdesc X-Git-Tag: Ubuntu-snapdragon-4.4.0-1050.54~16292^2~254^2~9 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=60f8cc60fa41b8c44662a3a4d99862e3b81cfa6f;p=mirror_ubuntu-artful-kernel.git 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 Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c index d08ab930e430..c3179d9bdc38 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);