Hi Jianwei,
your commit 109eee2f2a18 ("drm/layerscape: Add Freescale DCU DRM
driver") showed up in linux-next today (i.e., next-20150821). I noticed
it because we are running a daily analysis on the newest linux-next tree
as part of our research.
In the source code of fsl_dcu_drm_drv.c, there is the following #ifdef:
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
The Kconfig option for the driver, however, states that the driver can
only be built with CONFIG_ARM enabled:
config DRM_FSL_DCU
tristate "DRM Support for Freescale DCU"
depends on DRM && OF && ARM
[...]
Inside arch/arm/, however, there is no definition of CONFIG_COMPAT (note
that there is one in arch/arm64/, but the driver explicitely needs
CONFIG_ARM), so the #ifdef block above can never be compiled in the
current state. Is this intended?
Regards,
Andreas
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