ath9k_hw: Fix TX interrupt mitigation settings
TX interrupt mitigation reduces the number of interrupts
by addressing several interrupt actions (AR_IMR_TXOK,
AR_IMR_TXDESC) all in one interrupt so when enabling
it discard setting the other interrupts.
Without this TX interrupt mitigation would actually
increase the number of interrupts two-fold. We still
leave TX interrupt mitigation disabled as it is still
being tested.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index 7bbf502..0e425cb 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -878,10 +878,12 @@
if (ints & ATH9K_INT_TX) {
if (ah->config.tx_intr_mitigation)
mask |= AR_IMR_TXMINTR | AR_IMR_TXINTM;
- if (ah->txok_interrupt_mask)
- mask |= AR_IMR_TXOK;
- if (ah->txdesc_interrupt_mask)
- mask |= AR_IMR_TXDESC;
+ else {
+ if (ah->txok_interrupt_mask)
+ mask |= AR_IMR_TXOK;
+ if (ah->txdesc_interrupt_mask)
+ mask |= AR_IMR_TXDESC;
+ }
if (ah->txerr_interrupt_mask)
mask |= AR_IMR_TXERR;
if (ah->txeol_interrupt_mask)