diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_cmd.c')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_cmd.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c index 08b0823c93d5..f86771481317 100644 --- a/drivers/gpu/drm/qxl/qxl_cmd.c +++ b/drivers/gpu/drm/qxl/qxl_cmd.c @@ -277,7 +277,7 @@ out_unref: return 0; } -static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port) +static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port, bool intr) { int irq_num; long addr = qdev->io_base + port; @@ -285,20 +285,29 @@ static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port) mutex_lock(&qdev->async_io_mutex); irq_num = atomic_read(&qdev->irq_received_io_cmd); - - if (qdev->last_sent_io_cmd > irq_num) { - ret = wait_event_interruptible(qdev->io_cmd_event, - atomic_read(&qdev->irq_received_io_cmd) > irq_num); - if (ret) + if (intr) + ret = wait_event_interruptible_timeout(qdev->io_cmd_event, + atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ); + else + ret = wait_event_timeout(qdev->io_cmd_event, + atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ); + /* 0 is timeout, just bail the "hw" has gone away */ + if (ret <= 0) goto out; irq_num = atomic_read(&qdev->irq_received_io_cmd); } outb(val, addr); qdev->last_sent_io_cmd = irq_num + 1; - ret = wait_event_interruptible(qdev->io_cmd_event, - atomic_read(&qdev->irq_received_io_cmd) > irq_num); + if (intr) + ret = wait_event_interruptible_timeout(qdev->io_cmd_event, + atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ); + else + ret = wait_event_timeout(qdev->io_cmd_event, + atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ); out: + if (ret > 0) + ret = 0; mutex_unlock(&qdev->async_io_mutex); return ret; } @@ -308,7 +317,7 @@ static void wait_for_io_cmd(struct qxl_device *qdev, uint8_t val, long port) int ret; restart: - ret = wait_for_io_cmd_user(qdev, val, port); + ret = wait_for_io_cmd_user(qdev, val, port, false); if (ret == -ERESTARTSYS) goto restart; } @@ -340,7 +349,7 @@ int qxl_io_update_area(struct qxl_device *qdev, struct qxl_bo *surf, mutex_lock(&qdev->update_area_mutex); qdev->ram_header->update_area = *area; qdev->ram_header->update_surface = surface_id; - ret = wait_for_io_cmd_user(qdev, 0, QXL_IO_UPDATE_AREA_ASYNC); + ret = wait_for_io_cmd_user(qdev, 0, QXL_IO_UPDATE_AREA_ASYNC, true); mutex_unlock(&qdev->update_area_mutex); return ret; } |