From eb8232535bbeaf51f7c4826265ad96bf966829f3 Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Thu, 15 Apr 2010 17:39:35 -0400 Subject: [PATCH] ath9k_hw: Compute pointer checksum over the link descriptor Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_mac.c | 36 ++++++++++++--------- 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c index 1a8c1ba538b..582c8805066 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c @@ -21,14 +21,33 @@ static void ar9003_hw_rx_enable(struct ath_hw *hw) REG_WRITE(hw, AR_CR, 0); } +static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads) +{ + int checksum; + + checksum = ads->info + ads->link + + ads->data0 + ads->ctl3 + + ads->data1 + ads->ctl5 + + ads->data2 + ads->ctl7 + + ads->data3 + ads->ctl9; + + return ((checksum & 0xffff) + (checksum >> 16)) & AR_TxPtrChkSum; +} + static void ar9003_hw_set_desc_link(void *ds, u32 ds_link) { - ((struct ar9003_txc *) ds)->link = ds_link; + struct ar9003_txc *ads = ds; + + ads->link = ds_link; + ads->ctl10 &= ~AR_TxPtrChkSum; + ads->ctl10 |= ar9003_calc_ptr_chksum(ads); } static void ar9003_hw_get_desc_link(void *ds, u32 **ds_link) { - *ds_link = &((struct ar9003_txc *) ds)->link; + struct ar9003_txc *ads = ds; + + *ds_link = &ads->link; } static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked) @@ -168,19 +187,6 @@ static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked) return true; } -static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads) -{ - int checksum; - - checksum = ads->info + ads->link - + ads->data0 + ads->ctl3 - + ads->data1 + ads->ctl5 - + ads->data2 + ads->ctl7 - + ads->data3 + ads->ctl9; - - return ((checksum & 0xffff) + (checksum >> 16)) & AR_TxPtrChkSum; -} - static void ar9003_hw_fill_txdesc(struct ath_hw *ah, void *ds, u32 seglen, bool is_firstseg, bool is_lastseg, const void *ds0, dma_addr_t buf_addr, -- 2.46.0