From: Jussi Kivilinna Date: Mon, 20 Jun 2011 11:42:54 +0000 (+0300) Subject: zd1211rw: detect stalled beacon interrupt faster X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=55f7782e14032c70051aa92d882b4effda407ad5;p=deliverable%2Flinux.git zd1211rw: detect stalled beacon interrupt faster As USB_INT_ID_RETRY_FAILED can override USB_INT_ID_REGS, beacon interrupt (CR_INTERRUPT) might be lost. Problem is that when device trigger CR_INTERRUPT it disables HW interrupt. Now if USB_INT_ID_REGS with CR_INTERRUPT gets lost, beacon interrupt stays disabled until beacon watchdog notices the stall. This happen very often on heavy TX. Improve watchdog to trigger earlier, after three missing beacon interrupts. Signed-off-by: Jussi Kivilinna Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index b67c52d9c36c..cabfae1e70b1 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -1429,7 +1429,8 @@ static void beacon_watchdog_handler(struct work_struct *work) spin_lock_irq(&mac->lock); interval = mac->beacon.interval; period = mac->beacon.period; - timeout = mac->beacon.last_update + msecs_to_jiffies(interval) + HZ; + timeout = mac->beacon.last_update + + msecs_to_jiffies(interval * 1024 / 1000) * 3; spin_unlock_irq(&mac->lock); if (interval > 0 && time_is_before_jiffies(timeout)) {