From: Jonathan Sims Date: Sun, 23 Oct 2016 18:19:07 +0000 (-0200) Subject: [media] hdpvr: fix interrupted recording X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a503ff812430e104f591287b512aa4e3a83f20b1;p=linux-beck.git [media] hdpvr: fix interrupted recording This is a reworking of a patch originally submitted by Ryley Angus, modified by Hans Verkuil and then seemingly forgotten before changes suggested by Keith Pyle here: http://www.mail-archive.com/linux-media@vger.kernel.org/msg75163.html were made and tested. I have implemented the suggested changes and have been testing for the last 2 months. I am no longer experiencing lockups while recording (with blue light on, requiring power cycling) which had been a long standing problem with the HD-PVR. I have not noticed any other problems since applying the patch. Signed-off-by: Jonathan Sims Reported-by: Ryley Angus Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c index e3e7682d0f0e..7fb036d6a86e 100644 --- a/drivers/media/usb/hdpvr/hdpvr-video.c +++ b/drivers/media/usb/hdpvr/hdpvr-video.c @@ -449,6 +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) @@ -456,9 +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)