[PATCH] drm: Fix broken use of _PAGE_NO_CACHE on powerpc

[Daniel Vetter]

On Mon, Jun 27, 2016 at 07:00:23PM +1000, Benjamin Herrenschmidt wrote:
> That constant isn't meant to be used outside of arch mm code
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

Applied to drm-misc, thanks.
-Daniel

> ---
>  drivers/gpu/drm/drm_memory.c  | 2 +-
>  drivers/gpu/drm/drm_scatter.c | 2 +-
>  drivers/gpu/drm/drm_vm.c      | 4 ++--
>  3 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
> index 87a8cb7..fc0ebd2 100644
> --- a/drivers/gpu/drm/drm_memory.c
> +++ b/drivers/gpu/drm/drm_memory.c
> @@ -44,7 +44,7 @@
>  # include <asm/agp.h>
>  #else
>  # ifdef __powerpc__
> -#  define PAGE_AGP	__pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
> +#  define PAGE_AGP	pgprot_noncached_wc(PAGE_KERNEL)
>  # else
>  #  define PAGE_AGP	PAGE_KERNEL
>  # endif
> diff --git a/drivers/gpu/drm/drm_scatter.c b/drivers/gpu/drm/drm_scatter.c
> index 4f0f3b3..bf70431 100644
> --- a/drivers/gpu/drm/drm_scatter.c
> +++ b/drivers/gpu/drm/drm_scatter.c
> @@ -41,7 +41,7 @@
>  static inline void *drm_vmalloc_dma(unsigned long size)
>  {
>  #if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
> -	return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL | _PAGE_NO_CACHE);
> +	return __vmalloc(size, GFP_KERNEL, pgprot_noncached_wc(PAGE_KERNEL));
>  #else
>  	return vmalloc_32(size);
>  #endif
> diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
> index ac9f4b3..7e9f642 100644
> --- a/drivers/gpu/drm/drm_vm.c
> +++ b/drivers/gpu/drm/drm_vm.c
> @@ -80,7 +80,7 @@ static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma)
>  	pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
>  
>  #if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
> -	tmp |= _PAGE_NO_CACHE;
> +	tmp = pgprot_noncached_wc(tmp);
>  #endif
>  	return tmp;
>  }
> @@ -593,7 +593,7 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
>  			 * pages and mappings in fault()
>  			 */
>  #if defined(__powerpc__)
> -			pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
> +			vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
>  #endif
>  			vma->vm_ops = &drm_vm_ops;
>  			break;
> 
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch