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| author | Vasanthakumar Thiagarajan <vasanth@atheros.com> | 2010-04-15 17:39:35 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-16 15:43:47 -0400 |
| commit | eb8232535bbeaf51f7c4826265ad96bf966829f3 (patch) | |
| tree | c1dce435fca304a95bd57f7f592cb04ef5776563 /drivers/net/wireless/ath/ath9k/ar9003_mac.c | |
| parent | 5088c2f1a2475546d9a79b515bde6d65b8681e51 (diff) | |
| download | kernel_samsung_espresso10-eb8232535bbeaf51f7c4826265ad96bf966829f3.zip kernel_samsung_espresso10-eb8232535bbeaf51f7c4826265ad96bf966829f3.tar.gz kernel_samsung_espresso10-eb8232535bbeaf51f7c4826265ad96bf966829f3.tar.bz2 | |
ath9k_hw: Compute pointer checksum over the link descriptor
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_mac.c | 36 |
1 files 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 1a8c1ba..582c880 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, |