diff options
| -rw-r--r-- | linux-core/drm_os_linux.h | 27 |
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 ) |