From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 7 Apr 2020 13:42:54 +0000 (+0200)
Subject: drm/exynos: gem: Remove dead-code
X-Git-Tag: baikal/mips/sdk5.9~13559^2~6^2~6
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=5d55fab4ea0d58184a21964172c08307f37fd7d1;p=kernel.git

drm/exynos: gem: Remove dead-code

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>
---

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 57defeb445223..dbd80f1e4c78b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -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 = {
-	.fault = exynos_drm_gem_fault,
 	.open = drm_gem_vm_open,
 	.close = drm_gem_vm_close,
 };
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index d734d9d51762f..40514d3dcf60f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -381,26 +381,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
 	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,
 				   struct vm_area_struct *vma)
 {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 42ec67bc262d4..f00044c0b6884 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -101,9 +101,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
 			       struct drm_device *dev,
 			       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. */
 int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);