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media: v4l: use WARN_ON(1) instead of __WARN()

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__WARN() cannot be used in portable code, since it is only
available on some architectures and configurations:

drivers/media/platform/pxa_camera.c: In function 'pxa_mbus_config_compatible':
drivers/media/platform/pxa_camera.c:642:3: error: implicit declaration of function '__WARN'; did you mean '__WALL'? [-Werror=implicit-function-declaration]

The common way to express an unconditional warning is WARN_ON(1),
so let's use that here.

Fixes: 97bbdf02d905 ("media: v4l: Add support for CSI-1 and CCP2 busses")

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Arnd Bergmann 2017-07-25 11:39:14 -04:00 committed by Mauro Carvalho Chehab
parent fa31c1175f
commit f57cdbd34c
2 changed files with 2 additions and 2 deletions
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2
drivers/media/platform/pxa_camera.c
View File

@ -639,7 +639,7 @@ static unsigned int pxa_mbus_config_compatible(const struct v4l2_mbus_config *cf
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
default:
__WARN();
WARN_ON(1);
return -EINVAL;
}
return 0;

2
drivers/media/platform/soc_camera/soc_mediabus.c
View File

@ -509,7 +509,7 @@ unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
default:
__WARN();
WARN_ON(1);
return -EINVAL;
}
return 0;