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SubjectRe: [PATCH v2] drm/vkms: Use new return type vm_fault_t
Hi Souptick,

On Thu, Jul 26, 2018 at 08:15:49PM +0530, Souptick Joarder wrote:
> Use new return type vm_fault_t for fault handler.
>
> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.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

Patch pushed to drm-misc-next. vkms is still experimental so I'm not
queueing this for 4.19. Thanks.

Gustavo

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