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>
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 @@
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 @@
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,