V4L/DVB (3320): Check if PLL-description is set

- Check if in the dvb-usb-device-structure the dvb_pll_desc is set before use.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
index da970947dfc7..9b254532af4d 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
@@ -52,9 +52,8 @@ int dvb_usb_pll_init_i2c(struct dvb_frontend *fe)
         struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };
         int ret = 0;
 
-        /* if there is nothing to initialize */
-        if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&
-                d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)
+        /* if pll_desc is not used */
+        if (d->pll_desc == NULL)
                 return 0;
 
         if (d->tuner_pass_ctrl)
@@ -80,6 +79,9 @@ int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep
 {
         struct dvb_usb_device *d = fe->dvb->priv;
 
+        if (d->pll_desc == NULL)
+                return 0;
+
         deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);
 
         b[0] = d->pll_addr << 1;