commit ca5be9cd0516629cb8ee335b7dad076e66d72a22
author Markus Rechberger <markus.rechberger@amd.com> Sat Apr 14 10:18:58 2007 -0300
committer Mauro Carvalho Chehab <mchehab@infradead.org> Fri Apr 27 15:45:30 2007 -0300
tree d55baaf4d5c633ef9ce5629375bf4fd1af50ea95
parent 31a1854706707dc3b67eb0d3bf0f51c67d91c82e

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>

drivers/media/dvb/dvb-core/dvb_frontend.c

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index a21a894..9783d39 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -606,6 +606,11 @@
 		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 @@
 	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 @@
 	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 @@
 	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);