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drm/exynos: gem: Remove dead-code

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The ExynosDRM page fault handler is never used, drm_gem_mmap()
always calls exynos_drm_gem_mmap() function, which perform
complete mapping for the given virtual address-space area.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Marek Szyprowski
2020-04-07 15:42:54 +02:00
committed by Inki Dae
parent fdd79b0db1
commit 3a2fe5662c
3 changed files with 0 additions and 24 deletions
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1
drivers/gpu/drm/exynos/exynos_drm_drv.c
View File

@@ -76,7 +76,6 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
} }
static const struct vm_operations_struct exynos_drm_gem_vm_ops = { static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
.fault = exynos_drm_gem_fault,
.open = drm_gem_vm_open, .open = drm_gem_vm_open,
.close = drm_gem_vm_close, .close = drm_gem_vm_close,
}; };

20
drivers/gpu/drm/exynos/exynos_drm_gem.c
View File

@@ -381,26 +381,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
return 0; return 0;
} }
vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct drm_gem_object *obj = vma->vm_private_data;
struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
unsigned long pfn;
pgoff_t page_offset;
page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
if (page_offset >= (exynos_gem->size >> PAGE_SHIFT)) {
DRM_ERROR("invalid page offset\n");
return VM_FAULT_SIGBUS;
}
pfn = page_to_pfn(exynos_gem->pages[page_offset]);
return vmf_insert_mixed(vma, vmf->address,
__pfn_to_pfn_t(pfn, PFN_DEV));
}
static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj, static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
struct vm_area_struct *vma) struct vm_area_struct *vma)
{ {

3
drivers/gpu/drm/exynos/exynos_drm_gem.h
View File

@@ -101,9 +101,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
struct drm_device *dev, struct drm_device *dev,
struct drm_mode_create_dumb *args); struct drm_mode_create_dumb *args);
/* page fault handler and mmap fault address(virtual) to physical memory. */
vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf);
/* set vm_flags and we can change the vm attribute to other one at here. */ /* set vm_flags and we can change the vm attribute to other one at here. */
int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);