| Message ID | 20161124162549.3787200-1-arnd@arndb.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/media/common/b2c2/flexcop-fe-tuner.c b/drivers/media/common/b2c2/flexcop-fe-tuner.c index f5956402fc69..5f10151ecec9 100644 --- a/drivers/media/common/b2c2/flexcop-fe-tuner.c +++ b/drivers/media/common/b2c2/flexcop-fe-tuner.c @@ -24,8 +24,7 @@ /* Can we use the specified front-end? Remember that if we are compiled * into the kernel we can't call code that's in modules. */ -#define FE_SUPPORTED(fe) (defined(CONFIG_DVB_##fe) || \ - (defined(CONFIG_DVB_##fe##_MODULE) && defined(MODULE))) +#define FE_SUPPORTED(fe) IS_REACHABLE(CONFIG_DVB_ ## fe) #if FE_SUPPORTED(BCM3510) || (FE_SUPPORTED(CX24120) && FE_SUPPORTED(ISL6421)) static int flexcop_fe_request_firmware(struct dvb_frontend *fe,
The FE_SUPPORTED() macro is basically the same as IS_REACHABLE, except that it causes a warning with gcc-7: common/b2c2/flexcop-fe-tuner.c:30:1: error: this use of "defined" may not be portable [-Werror=expansion-to-defined] common/b2c2/flexcop-fe-tuner.c:30:1: error: this use of "defined" may not be portable [-Werror=expansion-to-defined] common/b2c2/flexcop-fe-tuner.c:30:1: error: this use of "defined" may not be portable [-Werror=expansion-to-defined] Using IS_REACHABLE() to define it avoids the warning. Fixes: 3785bc170f79 ("[media] b2c2: break it into common/pci/usb directories") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/media/common/b2c2/flexcop-fe-tuner.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)