V4L/DVB (7802): tuner: Failures at tuner_attach were producing OOPS
As reported by Mike Galbraith <efault@gmx.de>:
[ 13.666587] TUNER: Unable to find symbol tda829x_probe()
[ 13.674638] tuner' 1-004b: chip found @ 0x96 (saa7133[0])
[ 13.691175] DVB: Unable to find symbol tda9887_attach()
[ 13.698968] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[ 13.709509] IP: [<ffffffff80302934>] strlcpy+0x11/0x36
[ 13.711135] PGD be167067 PUD be140067 PMD 0
[ 13.711137] Oops: 0000 [1] SMP
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
index c8cd718..b5dacde 100644
--- a/drivers/media/video/tuner-core.c
+++ b/drivers/media/video/tuner-core.c
@@ -340,16 +340,6 @@
tuner_warn("====================== WARNING! ======================\n");
}
-static void attach_tda829x(struct tuner *t)
-{
- struct tda829x_config cfg = {
- .lna_cfg = t->config,
- .tuner_callback = t->tuner_callback,
- };
- dvb_attach(tda829x_attach,
- &t->fe, t->i2c->adapter, t->i2c->addr, &cfg);
-}
-
static struct xc5000_config xc5000_cfg;
static void set_type(struct i2c_client *c, unsigned int type,
@@ -385,12 +375,19 @@
switch (t->type) {
case TUNER_MT2032:
- dvb_attach(microtune_attach,
- &t->fe, t->i2c->adapter, t->i2c->addr);
+ if (!dvb_attach(microtune_attach,
+ &t->fe, t->i2c->adapter, t->i2c->addr))
+ goto attach_failed;
break;
case TUNER_PHILIPS_TDA8290:
{
- attach_tda829x(t);
+ struct tda829x_config cfg = {
+ .lna_cfg = t->config,
+ .tuner_callback = t->tuner_callback,
+ };
+ if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter,
+ t->i2c->addr, &cfg))
+ goto attach_failed;
break;
}
case TUNER_TEA5767:
@@ -441,8 +438,9 @@
break;
}
case TUNER_TDA9887:
- dvb_attach(tda9887_attach,
- &t->fe, t->i2c->adapter, t->i2c->addr);
+ if (!dvb_attach(tda9887_attach,
+ &t->fe, t->i2c->adapter, t->i2c->addr))
+ goto attach_failed;
break;
case TUNER_XC5000:
{