diff options
| author | Andreas Oberritter <obi@linuxtv.org> | 2011-12-09 21:37:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-12-30 17:16:01 -0200 |
| commit | b9d5efcceb6b34ee20111b62cf7be61ae79af4e9 (patch) | |
| tree | 7a0dc9653474e821ebd2de3ee1d2f6faf9cab75f /drivers | |
| parent | a1dca1e30ac7991d8a90a3377008c850eb466edf (diff) | |
[media] DVB: dvb_frontend: fix delayed thread exit
There are some issues and miss-behaves at the dvb fe thread:
1) dvb_shutdown_timeout should be dvb_shutdown_timeout * HZ
instead of (dvb_shutdown_timeout * HZ + 1);
2) add a memory barrier to warrant that all CPU's will consider the
new value for release_jiffies;
3) wake up dvb thread also when fepriv->exit == DVB_FE_NO_EXIT.
Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index 66537b10132..3ff37cfde6a 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -507,7 +507,7 @@ static int dvb_frontend_is_exiting(struct dvb_frontend *fe) return 1; if (fepriv->dvbdev->writers == 1) - if (time_after(jiffies, fepriv->release_jiffies + + if (time_after_eq(jiffies, fepriv->release_jiffies + dvb_shutdown_timeout * HZ)) return 1; @@ -2116,12 +2116,15 @@ static int dvb_frontend_release(struct inode *inode, struct file *file) dprintk ("%s\n", __func__); - if ((file->f_flags & O_ACCMODE) != O_RDONLY) + if ((file->f_flags & O_ACCMODE) != O_RDONLY) { fepriv->release_jiffies = jiffies; + mb(); + } ret = dvb_generic_release (inode, file); if (dvbdev->users == -1) { + wake_up(&fepriv->wait_queue); if (fepriv->exit != DVB_FE_NO_EXIT) { fops_put(file->f_op); file->f_op = NULL; |