From 55f7782e14032c70051aa92d882b4effda407ad5 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Mon, 20 Jun 2011 14:42:54 +0300 Subject: [PATCH] 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 --- drivers/net/wireless/zd1211rw/zd_mac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index b67c52d..cabfae1 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)) { -- 2.7.4