V4L/DVB (5742): Tuner: define release callback for mt20xx, tda9887 and tda8290

Define tuner release callbacks for mt20xx, tda9887 and tda8290, so that
these drivers can release their own private structures themselves.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/video/mt20xx.c b/drivers/media/video/mt20xx.c
index d7e68a639cd8..5b33be8a49cd 100644
--- a/drivers/media/video/mt20xx.c
+++ b/drivers/media/video/mt20xx.c
@@ -495,6 +495,14 @@ static int mt2050_init(struct i2c_client *c)
         return 0;
 }
 
+static void microtune_release(struct i2c_client *c)
+{
+        struct tuner *t = i2c_get_clientdata(c);
+
+        kfree(t->priv);
+        t->priv = NULL;
+}
+
 int microtune_init(struct i2c_client *c)
 {
         struct microtune_priv *priv = NULL;
@@ -514,6 +522,7 @@ int microtune_init(struct i2c_client *c)
         t->set_tv_freq    = NULL;
         t->set_radio_freq = NULL;
         t->standby    = NULL;
+        t->release        = microtune_release;
         if (t->std & V4L2_STD_525_60) {
                 tuner_dbg("pinnacle ntsc\n");
                 priv->radio_if2 = 41300 * 1000;