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authorMarkus Rechberger <markus.rechberger@amd.com>2007-04-14 10:18:58 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-04-27 15:45:30 -0300
commitca5be9cd0516629cb8ee335b7dad076e66d72a22 (patch)
treed55baaf4d5c633ef9ce5629375bf4fd1af50ea95 /drivers/media/dvb
parent31a1854706707dc3b67eb0d3bf0f51c67d91c82e (diff)
V4L/DVB (5510): Fix 1/3 for bug 7819: fixed frontend hotplug issue
fixed frontend hotplug issue Signed-off-by: Michal CIJOML Semler <cijoml@volny.cz> Signed-off-by: Markus Rechberger <markus.rechberger@amd.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb')
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.c17
-rw-r--r--drivers/media/dvb/dvb-core/dvbdev.c1
-rw-r--r--drivers/media/dvb/dvb-core/dvbdev.h1
3 files changed, 17 insertions, 2 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index a21a894d3f98..9783d392b7d3 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -606,6 +606,11 @@ static void dvb_frontend_stop(struct dvb_frontend *fe)
return;
kthread_stop(fepriv->thread);
+
+ if (fepriv->dvbdev->users < -1)
+ wait_event_interruptible(fepriv->dvbdev->wait_queue,
+ fepriv->dvbdev->users==-1);
+
init_MUTEX (&fepriv->sem);
fepriv->state = FESTATE_IDLE;
@@ -1023,6 +1028,7 @@ static int dvb_frontend_release(struct inode *inode, struct file *file)
struct dvb_device *dvbdev = file->private_data;
struct dvb_frontend *fe = dvbdev->priv;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ int ret;
dprintk ("%s\n", __FUNCTION__);
@@ -1032,7 +1038,14 @@ static int dvb_frontend_release(struct inode *inode, struct file *file)
if (fe->ops.ts_bus_ctrl)
fe->ops.ts_bus_ctrl (fe, 0);
- return dvb_generic_release (inode, file);
+ ret = dvb_generic_release (inode, file);
+
+ if (dvbdev->users==-1 && fepriv->exit==1) {
+ fops_put(file->f_op);
+ file->f_op = NULL;
+ wake_up_interruptible (&dvbdev->wait_queue);
+ }
+ return ret;
}
static struct file_operations dvb_frontend_fops = {
@@ -1091,9 +1104,9 @@ int dvb_unregister_frontend(struct dvb_frontend* fe)
struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
+ dvb_frontend_stop (fe);
mutex_lock(&frontend_mutex);
dvb_unregister_device (fepriv->dvbdev);
- dvb_frontend_stop (fe);
/* fe is invalid now */
kfree(fepriv);
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 14a372a0fe8b..e23d8a0ea1d3 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -233,6 +233,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvbdev->adapter = adap;
dvbdev->priv = priv;
dvbdev->fops = dvbdevfops;
+ init_waitqueue_head (&dvbdev->wait_queue);
memcpy(dvbdev->fops, template->fops, sizeof(struct file_operations));
dvbdev->fops->owner = adap->module;
diff --git a/drivers/media/dvb/dvb-core/dvbdev.h b/drivers/media/dvb/dvb-core/dvbdev.h
index 620e7887b3d3..6dff10ebf470 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.h
+++ b/drivers/media/dvb/dvb-core/dvbdev.h
@@ -69,6 +69,7 @@ struct dvb_device {
int writers;
int users;
+ wait_queue_head_t wait_queue;
/* don't really need those !? -- FIXME: use video_usercopy */
int (*kernel_ioctl)(struct inode *inode, struct file *file,
unsigned int cmd, void *arg);