From e42837bcd35b75bb59ae5d3e62f87be1aeeb05c3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 18 Oct 2007 03:04:45 -0700 Subject: freezer: introduce freezer-friendly waiting macros Introduce freezer-friendly wrappers around wait_event_interruptible() and wait_event_interruptible_timeout(), originally defined in , to be used in freezable kernel threads. Make some of the freezable kernel threads use them. This is necessary for the freezer to stop sending signals to kernel threads, which is implemented in the next patch. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Cc: Nigel Cunningham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/usb/core/hub.c | 3 +-- drivers/usb/storage/usb.c | 5 +---- 2 files changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 60a8f55..036c3de 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2870,10 +2870,9 @@ static int hub_thread(void *__unused) set_freezable(); do { hub_events(); - wait_event_interruptible(khubd_wait, + wait_event_freezable(khubd_wait, !list_empty(&hub_event_list) || kthread_should_stop()); - try_to_freeze(); } while (!kthread_should_stop() || !list_empty(&hub_event_list)); pr_debug("%s: khubd exiting\n", usbcore_name); diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 3451e8d0..ac6114e 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -907,12 +907,9 @@ static int usb_stor_scan_thread(void * __us) if (delay_use > 0) { printk(KERN_DEBUG "usb-storage: waiting for device " "to settle before scanning\n"); -retry: - wait_event_interruptible_timeout(us->delay_wait, + wait_event_freezable_timeout(us->delay_wait, test_bit(US_FLIDX_DISCONNECTING, &us->flags), delay_use * HZ); - if (try_to_freeze()) - goto retry; } /* If the device is still connected, perform the scanning */ -- cgit v1.1