>From 7cccf82cf2c34f8e5b3a60100a1e35108c52bfba Mon Sep 17 00:00:00 2001 From: Oliver Neukum <[email protected]> Date: Fri, 16 Jan 2015 14:58:23 +0100 Subject: [PATCH] cdc-wdm: race between work queue and pre_reset
pre_reset() must cease IO so the work needs to check the flag. Signed-off-by: Oliver Neukum <[email protected]> --- drivers/usb/class/cdc-wdm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 6647f37..5ff7018 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -730,7 +730,9 @@ static void wdm_rxwork(struct work_struct *work) int responding; spin_lock_irqsave(&desc->iuspin, flags); - if (test_bit(WDM_DISCONNECTING, &desc->flags)) { + if (test_bit(WDM_DISCONNECTING, &desc->flags) || + test_bit(WDM_RESETTING, &desc->flags) + ) { spin_unlock_irqrestore(&desc->iuspin, flags); } else { responding = test_and_set_bit(WDM_RESPONDING, &desc->flags); -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
