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/tda9887.c b/drivers/media/video/tda9887.c
index 01f18b07d013..f0443cc02e5c 100644
--- a/drivers/media/video/tda9887.c
+++ b/drivers/media/video/tda9887.c
@@ -591,6 +591,14 @@ static void tda9887_set_freq(struct i2c_client *client, unsigned int freq)
         tda9887_configure(client);
 }
 
+static void tda9887_release(struct i2c_client *c)
+{
+        struct tuner *t = i2c_get_clientdata(c);
+
+        kfree(t->priv);
+        t->priv = NULL;
+}
+
 int tda9887_tuner_init(struct i2c_client *c)
 {
         struct tda9887_priv *priv = NULL;
@@ -611,6 +619,7 @@ int tda9887_tuner_init(struct i2c_client *c)
         t->standby = tda9887_standby;
         t->tuner_status = tda9887_tuner_status;
         t->get_afc = tda9887_get_afc;
+        t->release = tda9887_release;
 
         return 0;
 }