[PATCH] dvb: usb: dtt200u: copy frontend_ops before modifying

Fix: copy frontend_ops before modifying

Signed-off-by: Ye Jianjun (Joey) <joeyye@trident.com.cn>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/media/dvb/dvb-usb/dtt200u-fe.c b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
index b032523b07bc42aaeac7116926e6a7824e7702ed..0a94ec22aeb863bc7423d8fc55882ff3daae640f 100644 (file)
--- a/drivers/media/dvb/dvb-usb/dtt200u-fe.c
+++ b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
@@ -18,6 +18,7 @@ struct dtt200u_fe_state {
 
        struct dvb_frontend_parameters fep;
        struct dvb_frontend frontend;
+       struct dvb_frontend_ops ops;
 };
 
 static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat)
@@ -163,8 +164,9 @@ struct dvb_frontend* dtt200u_fe_attach(struct dvb_usb_device *d)
        deb_info("attaching frontend dtt200u\n");
 
        state->d = d;
+       memcpy(&state->ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops));
 
-       state->frontend.ops = &dtt200u_fe_ops;
+       state->frontend.ops = &state->ops;
        state->frontend.demodulator_priv = state;
 
        goto success;