diff options
| author | Michael Buesch <mb@bu3sch.de> | 2006-06-18 19:05:10 +0200 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-06-29 17:17:16 -0700 |
| commit | e45424909c0a8ffc7afbea6e35da582f782fc618 (patch) | |
| tree | 6c30a65769361bc082fe4073b3ef052e7820b24e | |
| parent | 5cb91c1a730874dd915eba983996b3e45378e39b (diff) | |
[PATCH] bcm43xx: init fix for possible Machine Check
Place the Init-vs-IRQ workaround before any card register
access, because we might not have the wireless core mapped
at all times in init. So this will result in a Machine Check
caused by a bus error.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | drivers/net/wireless/bcm43xx/bcm43xx_main.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index 7ed18cad29f..513fc759f99 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -1870,6 +1870,15 @@ static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id, struct pt_re spin_lock(&bcm->_lock); + /* Only accept IRQs, if we are initialized properly. + * This avoids an RX race while initializing. + * We should probably not enable IRQs before we are initialized + * completely, but some careful work is needed to fix this. I think it + * is best to stay with this cheap workaround for now... . + */ + if (unlikely(!bcm->initialized)) + goto out; + reason = bcm43xx_read32(bcm, BCM43xx_MMIO_GEN_IRQ_REASON); if (reason == 0xffffffff) { /* irq not for us (shared irq) */ @@ -1891,20 +1900,11 @@ static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id, struct pt_re bcm43xx_interrupt_ack(bcm, reason); - /* Only accept IRQs, if we are initialized properly. - * This avoids an RX race while initializing. - * We should probably not enable IRQs before we are initialized - * completely, but some careful work is needed to fix this. I think it - * is best to stay with this cheap workaround for now... . - */ - if (likely(bcm->initialized)) { - /* disable all IRQs. They are enabled again in the bottom half. */ - bcm->irq_savedstate = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL); - /* save the reason code and call our bottom half. */ - bcm->irq_reason = reason; - tasklet_schedule(&bcm->isr_tasklet); - } - + /* disable all IRQs. They are enabled again in the bottom half. */ + bcm->irq_savedstate = bcm43xx_interrupt_disable(bcm, BCM43xx_IRQ_ALL); + /* save the reason code and call our bottom half. */ + bcm->irq_reason = reason; + tasklet_schedule(&bcm->isr_tasklet); out: mmiowb(); spin_unlock(&bcm->_lock); |