Re: DRM_STM breaks fbdev mmap on ARCH_MULTIPLATFORM

2017-07-10 Thread Eric Anholt
Benjamin Gaignard writes: > 2017-07-10 12:53 GMT+02:00 Noralf Trønnes : >> 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

Re: DRM_STM breaks fbdev mmap on ARCH_MULTIPLATFORM

2017-07-10 Thread Daniel Vetter
On Mon, Jul 10, 2017 at 2:23 PM, Emil Velikov wrote: > In parallel to the actual fix - perhaps one should drop the default line? > From a quick look, I cannot see another DRM driver that sets it. Yes, default y is considered very much not cool. Default for drivers should always be n, including su

Re: DRM_STM breaks fbdev mmap on ARCH_MULTIPLATFORM

2017-07-10 Thread Emil Velikov
On 10 July 2017 at 12:49, Benjamin Gaignard wrote: > 2017-07-10 12:53 GMT+02:00 Noralf Trønnes : >> 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_S

Re: DRM_STM breaks fbdev mmap on ARCH_MULTIPLATFORM

2017-07-10 Thread Benjamin Gaignard
2017-07-10 12:53 GMT+02:00 Noralf Trønnes : > 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 >

DRM_STM breaks fbdev mmap on ARCH_MULTIPLATFORM

2017-07-10 Thread Noralf Trønnes
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"