Hi
DRM_STM is 'default y' on ARCH_MULTIPLATFORM and it selects
FB_PROVIDE_GET_FB_UNMAPPED_AREA. This breaks fbdev mmap for me on
Raspberry Pi. mmap returns -ENOMEM.
Disabling DRM_STM gives me working mmap.
Noralf.
config DRM_STM
tristate "DRM Support for STMicroelectronics SoC Series"
depends on DRM && (ARCH_STM32 || ARCH_MULTIPLATFORM)
select DRM_KMS_HELPER
select DRM_GEM_CMA_HELPER
select DRM_KMS_CMA_HELPER
select DRM_PANEL
select VIDEOMODE_HELPERS
select FB_PROVIDE_GET_FB_UNMAPPED_AREA
default y
help
Enable support for the on-chip display controller on
STMicroelectronics STM32 MCUs.
To compile this driver as a module, choose M here: the module
will be called stm-drm.
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