diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_mmu.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_mmu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_mmu.c b/drivers/gpu/drm/imagination/pvr_mmu.c index 4fe70610ed94..450d476d183f 100644 --- a/drivers/gpu/drm/imagination/pvr_mmu.c +++ b/drivers/gpu/drm/imagination/pvr_mmu.c @@ -17,6 +17,7 @@ #include <linux/dma-mapping.h> #include <linux/kmemleak.h> #include <linux/minmax.h> +#include <linux/property.h> #include <linux/sizes.h> #define PVR_SHIFT_FROM_SIZE(size_) (__builtin_ctzll(size_)) @@ -259,6 +260,7 @@ pvr_mmu_backing_page_init(struct pvr_mmu_backing_page *page, struct device *dev = from_pvr_device(pvr_dev)->dev; struct page *raw_page; + pgprot_t prot; int err; dma_addr_t dma_addr; @@ -268,7 +270,11 @@ pvr_mmu_backing_page_init(struct pvr_mmu_backing_page *page, if (!raw_page) return -ENOMEM; - host_ptr = vmap(&raw_page, 1, VM_MAP, pgprot_writecombine(PAGE_KERNEL)); + prot = PAGE_KERNEL; + if (device_get_dma_attr(dev) != DEV_DMA_COHERENT) + prot = pgprot_writecombine(prot); + + host_ptr = vmap(&raw_page, 1, VM_MAP, prot); if (!host_ptr) { err = -ENOMEM; goto err_free_page; |