diff options
| author | Michael Buesch <mbuesch@freenet.de> | 2006-02-21 17:58:18 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2006-03-27 18:18:38 +0200 |
| commit | bf7b876043e6e1390b1234d740f4fd9af20b3b9e (patch) | |
| tree | b13d7e74f53baec86c9ef7efa3ec81e1dde6190f /drivers/net/wireless/bcm43xx/bcm43xx_main.c | |
| parent | [PATCH] bcm43xx: Fix Kconfig typo (transfer mode default) (diff) | |
| download | linux-bf7b876043e6e1390b1234d740f4fd9af20b3b9e.tar.xz linux-bf7b876043e6e1390b1234d740f4fd9af20b3b9e.zip | |
[PATCH] bcm43xx: Workaround init_board vs IRQ race.
The proper fix for this is to move IRQ enabling to the end of
init_board. But this is nontrivial and needs to be done with care.
Stay with this cheap workaround for now.
Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_main.c')
| -rw-r--r-- | drivers/net/wireless/bcm43xx/bcm43xx_main.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index 6195c2a1516d..57306a658407 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -2079,12 +2079,19 @@ static irqreturn_t bcm43xx_interrupt_handler(int irq, void *dev_id, struct pt_re bcm43xx_interrupt_ack(bcm, reason, mask); - /* 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); + /* 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); + } spin_unlock(&bcm->lock); |