diff options
Diffstat (limited to 'drivers/media/usb/hdpvr/hdpvr-video.c')
| -rw-r--r-- | drivers/media/usb/hdpvr/hdpvr-video.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c index 474c11e1d495..7fb036d6a86e 100644 --- a/drivers/media/usb/hdpvr/hdpvr-video.c +++ b/drivers/media/usb/hdpvr/hdpvr-video.c @@ -336,9 +336,7 @@ static int hdpvr_stop_streaming(struct hdpvr_device *dev) buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); if (!buf) - v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer " - "for emptying the internal device buffer. " - "Next capture start will be slow\n"); + v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n"); dev->status = STATUS_SHUTTING_DOWN; hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); @@ -451,6 +449,7 @@ static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, if (buf->status != BUFSTAT_READY && dev->status != STATUS_DISCONNECTED) { + int err; /* return nonblocking */ if (file->f_flags & O_NONBLOCK) { if (!ret) @@ -458,9 +457,24 @@ static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, goto err; } - if (wait_event_interruptible(dev->wait_data, - buf->status == BUFSTAT_READY)) - return -ERESTARTSYS; + err = wait_event_interruptible_timeout(dev->wait_data, + buf->status == BUFSTAT_READY, + msecs_to_jiffies(1000)); + if (err < 0) { + ret = err; + goto err; + } + if (!err) { + v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, + "timeout: restart streaming\n"); + hdpvr_stop_streaming(dev); + msecs_to_jiffies(4000); + err = hdpvr_start_streaming(dev); + if (err) { + ret = err; + goto err; + } + } } if (buf->status != BUFSTAT_READY) |