diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2010-04-19 19:57:29 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-20 11:50:52 -0400 |
| commit | c9c99e5e440013c420fd8ec41ee83e89909d5186 (patch) | |
| tree | 99bc6b0e758937c899d0ef4b28b6a30385d21139 /drivers | |
| parent | 80725f454e58937ad546103e6a141c46b0d65a1b (diff) | |
| download | linux-c9c99e5e440013c420fd8ec41ee83e89909d5186.tar.gz linux-c9c99e5e440013c420fd8ec41ee83e89909d5186.tar.bz2 linux-c9c99e5e440013c420fd8ec41ee83e89909d5186.zip | |
ath9k: check for specific rx stuck conditions and recover from them
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 28 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 3 |
3 files changed, 31 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 0b85f68d516f..11e6a897c21a 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -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) { diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h index 8158e8e6a53d..a78e09bab431 100644 --- a/drivers/net/wireless/ath/ath9k/hw.h +++ b/drivers/net/wireless/ath/ath9k/hw.h @@ -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); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 40136cf63fa4..aad370a7f95b 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -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; |