V4L/DVB (4751): Fix DBV_FE_CUSTOMISE for card drivers compiled into kernel

When a front-end is disabled, card drivers that use it are compiled with
a stub version of the front-end's attach function.  This way they have no
references to the front-end's code and don't need it to be loaded.
If a card driver is compiled into the kernel, and a front-end is a
module, then that front-end is effectively disabled wrt the card driver. 
In this case, the card driver should get the stub version.  This was not
happening.
The stub vs real attach function selection is changed so that when the
front-end is a module the real attach function is only used if the card
driver is a module as well.  This means a module front-end will be
supported by card drivers that are modules and not supported by card
drivers compiled into the kernel.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/dvb/frontends/mt352.h b/drivers/media/dvb/frontends/mt352.h
index 0035c2e2d7c2..e9964081fd84 100644
--- a/drivers/media/dvb/frontends/mt352.h
+++ b/drivers/media/dvb/frontends/mt352.h
@@ -51,7 +51,7 @@ struct mt352_config
         int (*demod_init)(struct dvb_frontend* fe);
 };
 
-#if defined(CONFIG_DVB_MT352) || defined(CONFIG_DVB_MT352_MODULE)
+#if defined(CONFIG_DVB_MT352) || (defined(CONFIG_DVB_MT352_MODULE) && defined(MODULE))
 extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,
                                          struct i2c_adapter* i2c);
 #else