Felix Fietkau <[email protected]> writes: > To fix invalid hardware accesses, the commit > "ath9k: do not access hardware on IRQs during reset" made the irq > handler ignore interrupts emitted after queueing a hardware reset (which > disables the IRQ). This left a small time window for the IRQ to get > re-enabled by the tasklet, which caused IRQ storms. > Instead of returning IRQ_NONE when ATH_OP_HW_RESET is set, disable the > IRQ entirely for the duration of the reset. > > Signed-off-by: Felix Fietkau <[email protected]>
Thanks, applied to wireless-drivers.git. I made a small change and added the commit id to the commit log: commit e3f31175a3eeb492a6ab788e4fa136c19b43aab4 Author: Felix Fietkau <[email protected]> Date: Wed Jan 14 14:17:36 2015 +0100 ath9k: fix race condition in irq processing during hardware reset To fix invalid hardware accesses, the commit 872b5d814f99 ("ath9k: do not access hardware on IRQs during reset") made the irq handler ignore interrupts emitted after queueing a hardware reset (which disables the IRQ). This left a small time window for the IRQ to get re-enabled by the tasklet, which caused IRQ storms. Instead of returning IRQ_NONE when ATH_OP_HW_RESET is set, disable the IRQ entirely for the duration of the reset. Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: Kalle Valo <[email protected]> -- Kalle Valo -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
