V4L/DVB (3673): Fix budget-av CAM reset

[safe/jmp/linux-2.6] / 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 2c3ea8f..4f8f257 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -105,6 +105,7 @@ struct dvb_frontend_private {
        fe_status_t status;
        unsigned long tune_mode_flags;
        unsigned int delay;
+       unsigned int reinitialise;
 
        /* swzigzag values */
        unsigned int state;
@@ -121,6 +122,7 @@ struct dvb_frontend_private {
        unsigned int check_wrapped;
 };
 
+static void dvb_frontend_wakeup(struct dvb_frontend *fe);
 
 static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
 {
@@ -213,6 +215,15 @@ static void dvb_frontend_init(struct dvb_frontend *fe)
                fe->ops->init(fe);
 }
 
+void dvb_frontend_reinitialise(struct dvb_frontend *fe)
+{
+       struct dvb_frontend_private *fepriv = fe->frontend_priv;
+
+       fepriv->reinitialise = 1;
+       dvb_frontend_wakeup(fe);
+}
+EXPORT_SYMBOL(dvb_frontend_reinitialise);
+
 static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
 {
        int q2;
@@ -505,8 +516,8 @@ static int dvb_frontend_thread(void *data)
        fepriv->quality = 0;
        fepriv->delay = 3*HZ;
        fepriv->status = 0;
-       dvb_frontend_init(fe);
        fepriv->wakeup = 0;
+       fepriv->reinitialise = 1;
 
        while (1) {
                up(&fepriv->sem);           /* is locked when we enter the thread... */
@@ -524,6 +535,11 @@ static int dvb_frontend_thread(void *data)
                if (down_interruptible(&fepriv->sem))
                        break;
 
+               if (fepriv->reinitialise) {
+                       dvb_frontend_init(fe);
+                       fepriv->reinitialise = 0;
+               }
+
                /* do an iteration of the tuning loop */
                if (fe->ops->tune) {
                        /* have we been asked to retune? */