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ath9k: check for specific rx stuck conditions and recover from them

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-04-19 19:57:29 +02:00 committed by John W. Linville
parent 80725f454e
commit c9c99e5e44
3 changed files with 31 additions and 1 deletions
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28
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -1159,6 +1159,34 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah,
return true;
}
bool ath9k_hw_check_alive(struct ath_hw *ah)
{
int count = 50;
u32 reg;
if (AR_SREV_9285_10_OR_LATER(ah))
return true;
do {
reg = REG_READ(ah, AR_OBS_BUS_1);
if ((reg & 0x7E7FFFEF) == 0x00702400)
continue;
switch (reg & 0x7E000B00) {
case 0x1E000000:
case 0x52000B00:
case 0x18000B00:
continue;
default:
return true;
}
} while (count-- > 0);
return false;
}
EXPORT_SYMBOL(ath9k_hw_check_alive);
int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
bool bChannelChange)
{

1
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -869,6 +869,7 @@ void ath9k_hw_set11nmac2040(struct ath_hw *ah);
void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period);
void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
const struct ath9k_beacon_state *bs);
bool ath9k_hw_check_alive(struct ath_hw *ah);
bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode);

3
drivers/net/wireless/ath/ath9k/main.c
View File

@ -405,7 +405,8 @@ void ath9k_tasklet(unsigned long data)
ath9k_ps_wakeup(sc);
if (status & ATH9K_INT_FATAL) {
if ((status & ATH9K_INT_FATAL) ||
!ath9k_hw_check_alive(ah)) {
ath_reset(sc, false);
ath9k_ps_restore(sc);
return;