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-rw-r--r--linux-core/drm_os_linux.h27
1 files changed, 20 insertions, 7 deletions
diff --git a/linux-core/drm_os_linux.h b/linux-core/drm_os_linux.h
index 5d5d6e0e..1ed1cca4 100644
--- a/linux-core/drm_os_linux.h
+++ b/linux-core/drm_os_linux.h
@@ -5,7 +5,6 @@
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
-#include <linux/wait.h>
/** File pointer type */
#define DRMFILE struct file *
@@ -146,12 +145,26 @@ do { \
#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
do { \
- long __ret; \
- __ret = wait_event_interruptible_timeout(queue, condition, timeout); \
- if (__ret == 0) \
- ret = -EBUSY; \
- else if (__ret == -ERESTARTSYS) \
- ret = -EINTR; \
+ DECLARE_WAITQUEUE(entry, current); \
+ unsigned long end = jiffies + (timeout); \
+ add_wait_queue(&(queue), &entry); \
+ \
+ for (;;) { \
+ __set_current_state(TASK_INTERRUPTIBLE); \
+ if (condition) \
+ break; \
+ if (time_after_eq(jiffies, end)) { \
+ ret = -EBUSY; \
+ break; \
+ } \
+ schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \
+ if (signal_pending(current)) { \
+ ret = -EINTR; \
+ break; \
+ } \
+ } \
+ __set_current_state(TASK_RUNNING); \
+ remove_wait_queue(&(queue), &entry); \
} while (0)
#define DRM_WAKEUP( queue ) wake_up_interruptible( queue )