From: Xiaotian Feng Date: Wed, 31 Oct 2012 10:56:48 +0000 (+0800) Subject: staging: ozwpan: use tasklet_kill in device remove/release process X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=984a4a0378f609fc943e77d1beda900e8a6abaaf;p=linux-edison.git staging: ozwpan: use tasklet_kill in device remove/release process Some driver uses tasklet_disable in device remove/release process, tasklet_disable will inc tasklet->count and return. If the tasklet is not handled yet under some softirq pressure, the tasklet will be placed on the tasklet_vec, never have a chance to be excuted. This might lead to a heavy loaded ksoftirqd, wakeup with pending_softirq, but tasklet is disabled. tasklet_kill should be used in this case. Signed-off-by: Xiaotian Feng Cc: Rupesh Gujare Cc: Chris Kelly Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/ozwpan/ozhcd.c b/drivers/staging/ozwpan/ozhcd.c index 2e087acf157..33c0009b308 100644 --- a/drivers/staging/ozwpan/ozhcd.c +++ b/drivers/staging/ozwpan/ozhcd.c @@ -2304,8 +2304,8 @@ error: */ void oz_hcd_term(void) { - tasklet_disable(&g_urb_process_tasklet); - tasklet_disable(&g_urb_cancel_tasklet); + tasklet_kill(&g_urb_process_tasklet); + tasklet_kill(&g_urb_cancel_tasklet); platform_device_unregister(g_plat_dev); platform_driver_unregister(&g_oz_plat_drv); oz_trace("Pending urbs:%d\n", atomic_read(&g_pending_urbs));