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-rw-r--r--drivers/input/gameport/gameport.c3
-rw-r--r--drivers/input/serio/serio.c3
-rw-r--r--drivers/input/touchscreen/ucb1400_ts.c3
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.c3
-rw-r--r--drivers/usb/core/hub.c3
-rw-r--r--drivers/usb/storage/usb.c5
-rw-r--r--include/linux/freezer.h38
7 files changed, 45 insertions, 13 deletions
diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index 20896d5..ec1b6cf 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -448,9 +448,8 @@ static int gameport_thread(void *nothing)
set_freezable();
do {
gameport_handle_event();
- wait_event_interruptible(gameport_wait,
+ wait_event_freezable(gameport_wait,
kthread_should_stop() || !list_empty(&gameport_event_list));
- try_to_freeze();
} while (!kthread_should_stop());
printk(KERN_DEBUG "gameport: kgameportd exiting\n");
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index b3bc15a..7f52938 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -387,9 +387,8 @@ static int serio_thread(void *nothing)
set_freezable();
do {
serio_handle_event();
- wait_event_interruptible(serio_wait,
+ wait_event_freezable(serio_wait,
kthread_should_stop() || !list_empty(&serio_event_list));
- try_to_freeze();
} while (!kthread_should_stop());
printk(KERN_DEBUG "serio: kseriod exiting\n");
diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index 86aed64..89373b0 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -333,10 +333,9 @@ static int ucb1400_ts_thread(void *_ucb)
timeout = msecs_to_jiffies(10);
}
- wait_event_interruptible_timeout(ucb->ts_wait,
+ wait_event_freezable_timeout(ucb->ts_wait,
ucb->irq_pending || ucb->ts_restart || kthread_should_stop(),
timeout);
- try_to_freeze();
}
/* Send the "pen off" if we are stopping with the pen still active */
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index b203640..445f026 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -527,7 +527,8 @@ static int dvb_frontend_thread(void *data)
up(&fepriv->sem); /* is locked when we enter the thread... */
restart:
timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
- dvb_frontend_should_wakeup(fe) || kthread_should_stop(),
+ dvb_frontend_should_wakeup(fe) || kthread_should_stop()
+ || freezing(current),
fepriv->delay);
if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
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 3451e8d..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 */
diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index efded00..0893499 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -4,6 +4,7 @@
#define FREEZER_H_INCLUDED
#include <linux/sched.h>
+#include <linux/wait.h>
#ifdef CONFIG_PM_SLEEP
/*
@@ -126,6 +127,36 @@ static inline void set_freezable(void)
current->flags &= ~PF_NOFREEZE;
}
+/*
+ * Freezer-friendly wrappers around wait_event_interruptible() and
+ * wait_event_interruptible_timeout(), originally defined in <linux/wait.h>
+ */
+
+#define wait_event_freezable(wq, condition) \
+({ \
+ int __retval; \
+ do { \
+ __retval = wait_event_interruptible(wq, \
+ (condition) || freezing(current)); \
+ if (__retval && !freezing(current)) \
+ break; \
+ else if (!(condition)) \
+ __retval = -ERESTARTSYS; \
+ } while (try_to_freeze()); \
+ __retval; \
+})
+
+
+#define wait_event_freezable_timeout(wq, condition, timeout) \
+({ \
+ long __retval = timeout; \
+ do { \
+ __retval = wait_event_interruptible_timeout(wq, \
+ (condition) || freezing(current), \
+ __retval); \
+ } while (try_to_freeze()); \
+ __retval; \
+})
#else /* !CONFIG_PM_SLEEP */
static inline int frozen(struct task_struct *p) { return 0; }
static inline int freezing(struct task_struct *p) { return 0; }
@@ -143,6 +174,13 @@ static inline void freezer_do_not_count(void) {}
static inline void freezer_count(void) {}
static inline int freezer_should_skip(struct task_struct *p) { return 0; }
static inline void set_freezable(void) {}
+
+#define wait_event_freezable(wq, condition) \
+ wait_event_interruptible(wq, condition)
+
+#define wait_event_freezable_timeout(wq, condition, timeout) \
+ wait_event_interruptible_timeout(wq, condition, timeout)
+
#endif /* !CONFIG_PM_SLEEP */
#endif /* FREEZER_H_INCLUDED */