diff options
| author | Stefano Brivio | 2007-11-24 23:35:25 +0100 |
|---|---|---|
| committer | David S. Miller | 2008-01-28 15:05:04 -0800 |
| commit | a293ee990d0a3ba945eda5d0861969d0ca7ce62c (patch) | |
| tree | 28fd3a962f93ce02ef61f3a7ffe4eefe425529a2 /drivers | |
| parent | 5be3bda8987b12a87863c89b74b136fdb1f072db (diff) | |
b43legacy: reinit on too many PHY TX errors
Restart the hardware on too many PHY TX errors. A thousand PHY TX errors
per 15 seconds means we won't be able to recover for sure.
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/b43legacy/b43legacy.h | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/b43legacy/main.c | 15 |
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/net/wireless/b43legacy/b43legacy.h b/drivers/net/wireless/b43legacy/b43legacy.h index d906f6eb2020..e4de437b7896 100644 --- a/drivers/net/wireless/b43legacy/b43legacy.h +++ b/drivers/net/wireless/b43legacy/b43legacy.h @@ -276,6 +276,8 @@ #define B43legacy_DEFAULT_SHORT_RETRY_LIMIT 7 #define B43legacy_DEFAULT_LONG_RETRY_LIMIT 4 +#define B43legacy_PHY_TX_BADNESS_LIMIT 1000 + /* Max size of a security key */ #define B43legacy_SEC_KEYSIZE 16 /* Security algorithms. */ @@ -511,6 +513,9 @@ struct b43legacy_phy { u16 lofcal; u16 initval; + + /* PHY TX errors counter. */ + atomic_t txerr_cnt; }; /* Data structures for DMA transmission, per 80211 core. */ diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c index 92c03b0336a4..aa723effcf22 100644 --- a/drivers/net/wireless/b43legacy/main.c +++ b/drivers/net/wireless/b43legacy/main.c @@ -1221,8 +1221,15 @@ static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev) if (unlikely(reason & B43legacy_IRQ_MAC_TXERR)) b43legacyerr(dev->wl, "MAC transmission error\n"); - if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) + if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) { b43legacyerr(dev->wl, "PHY transmission error\n"); + rmb(); + if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { + b43legacyerr(dev->wl, "Too many PHY TX errors, " + "restarting the controller\n"); + b43legacy_controller_restart(dev, "PHY TX errors"); + } + } if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK | B43legacy_DMAIRQ_NONFATALMASK))) { @@ -2094,6 +2101,9 @@ static int b43legacy_chip_init(struct b43legacy_wldev *dev) b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY, dev->dev->bus->chipco.fast_pwrup_delay); + /* PHY TX errors counter. */ + atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); + B43legacy_WARN_ON(err != 0); b43legacydbg(dev->wl, "Chip initialized\n"); out: @@ -2138,6 +2148,9 @@ static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) { b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */ + + atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); + wmb(); } static void do_periodic_work(struct b43legacy_wldev *dev) |