linux-kernel - [PATCH v2] drm/vkms: Use new return type vm_fault

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Message-ID: <20180829154011.GA30885@jordon-HP-15-Notebook-PC>
Date:   Wed, 29 Aug 2018 21:10:11 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     akpm@...ux-foundation.org
Cc:     airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, willy@...radead.org,
        gustavo.padovan@...labora.com
Subject: [PATCH v2] drm/vkms: Use new return type vm_fault_t

Use new return type vm_fault_t for fault handler.

Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.com>
---
v2: Updated patch title

 drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
 drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 07be29f..d5d04a8 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
 				       u32 *handle,
 				       u64 size);
 
-int vkms_gem_fault(struct vm_fault *vmf);
+vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
 
 int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
 		     struct drm_mode_create_dumb *args);
diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
index c7e3836..62e05dc 100644
--- a/drivers/gpu/drm/vkms/vkms_gem.c
+++ b/drivers/gpu/drm/vkms/vkms_gem.c
@@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
 	kfree(gem);
 }
 
-int vkms_gem_fault(struct vm_fault *vmf)
+vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct vkms_gem_object *obj = vma->vm_private_data;
 	unsigned long vaddr = vmf->address;
 	pgoff_t page_offset;
 	loff_t num_pages;
-	int ret;
+	vm_fault_t ret = VM_FAULT_SIGBUS;
 
 	page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
 	num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
@@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
 	if (page_offset > num_pages)
 		return VM_FAULT_SIGBUS;
 
-	ret = -ENOENT;
 	mutex_lock(&obj->pages_lock);
 	if (obj->pages) {
 		get_page(obj->pages[page_offset]);
-- 
1.9.1