aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb-core/dvb_frontend.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb-core/dvb_frontend.c')
-rw-r--r--drivers/media/dvb-core/dvb_frontend.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 49d95040096a..9b4a47c104a1 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -603,6 +603,7 @@ static int dvb_frontend_thread(void *data)
enum dvbfe_algo algo;
bool re_tune = false;
+ bool semheld = false;
dev_dbg(fe->dvb->device, "%s:\n", __func__);
@@ -626,6 +627,8 @@ restart:
if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
/* got signal or quitting */
+ if (!down_interruptible(&fepriv->sem))
+ semheld = true;
fepriv->exit = DVB_FE_NORMAL_EXIT;
break;
}
@@ -741,6 +744,8 @@ restart:
fepriv->exit = DVB_FE_NO_EXIT;
mb();
+ if (semheld)
+ up(&fepriv->sem);
dvb_frontend_wakeup(fe);
return 0;
}
@@ -1823,16 +1828,20 @@ static int dvb_frontend_ioctl(struct file *file,
int err = -ENOTTY;
dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
- if (fepriv->exit != DVB_FE_NO_EXIT)
+ if (down_interruptible(&fepriv->sem))
+ return -ERESTARTSYS;
+
+ if (fepriv->exit != DVB_FE_NO_EXIT) {
+ up(&fepriv->sem);
return -ENODEV;
+ }
if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
(_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
- cmd == FE_DISEQC_RECV_SLAVE_REPLY))
+ cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
+ up(&fepriv->sem);
return -EPERM;
-
- if (down_interruptible (&fepriv->sem))
- return -ERESTARTSYS;
+ }
if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
err = dvb_frontend_ioctl_properties(file, cmd, parg);

Privacy Policy