Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a293ee990d0a3ba945eda5d0861969d0ca7ce62c
Commit: a293ee990d0a3ba945eda5d0861969d0ca7ce62c
Parent: 5be3bda8987b12a87863c89b74b136fdb1f072db
Author: Stefano Brivio <[EMAIL PROTECTED]>
AuthorDate: Sat Nov 24 23:35:25 2007 +0100
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 15:05:04 2008 -0800
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 <[EMAIL PROTECTED]>
Signed-off-by: John W. Linville <[EMAIL PROTECTED]>
---
drivers/net/wireless/b43legacy/b43legacy.h | 5 +++++
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 d906f6e..e4de437 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 92c03b0..aa723ef 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)
-
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