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drm/v3d: use new return type vm_fault_t in v3d_gem_fault
Instead of converting an errno into a vm_fault_t ourselves, use vmf_insert_mixed() which returns a vm_fault_t directly. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20180704145556.GA11036@jordon-HP-15-Notebook-PC Reviewed-by: Matthew Wilcox <willy@infradead.org>
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@ -227,37 +227,19 @@ v3d_set_mmap_vma_flags(struct vm_area_struct *vma)
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vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
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vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
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}
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}
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int v3d_gem_fault(struct vm_fault *vmf)
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vm_fault_t v3d_gem_fault(struct vm_fault *vmf)
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{
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{
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struct vm_area_struct *vma = vmf->vma;
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struct vm_area_struct *vma = vmf->vma;
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struct drm_gem_object *obj = vma->vm_private_data;
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struct drm_gem_object *obj = vma->vm_private_data;
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struct v3d_bo *bo = to_v3d_bo(obj);
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struct v3d_bo *bo = to_v3d_bo(obj);
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unsigned long pfn;
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pfn_t pfn;
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pgoff_t pgoff;
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pgoff_t pgoff;
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int ret;
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/* We don't use vmf->pgoff since that has the fake offset: */
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/* We don't use vmf->pgoff since that has the fake offset: */
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pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
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pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
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pfn = page_to_pfn(bo->pages[pgoff]);
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pfn = __pfn_to_pfn_t(page_to_pfn(bo->pages[pgoff]), PFN_DEV);
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ret = vm_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV));
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return vmf_insert_mixed(vma, vmf->address, pfn);
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switch (ret) {
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case -EAGAIN:
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case 0:
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case -ERESTARTSYS:
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case -EINTR:
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case -EBUSY:
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/*
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* EBUSY is ok: this just means that another thread
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* already did the job.
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*/
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return VM_FAULT_NOPAGE;
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case -ENOMEM:
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return VM_FAULT_OOM;
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default:
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return VM_FAULT_SIGBUS;
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}
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}
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}
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int v3d_mmap(struct file *filp, struct vm_area_struct *vma)
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int v3d_mmap(struct file *filp, struct vm_area_struct *vma)
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@ -2,6 +2,7 @@
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/* Copyright (C) 2015-2018 Broadcom */
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/* Copyright (C) 2015-2018 Broadcom */
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#include <linux/reservation.h>
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#include <linux/reservation.h>
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#include <linux/mm_types.h>
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#include <drm/drmP.h>
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#include <drm/drmP.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_gem.h>
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#include <drm/drm_gem.h>
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@ -252,7 +253,7 @@ int v3d_mmap_bo_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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struct drm_file *file_priv);
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int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data,
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int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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struct drm_file *file_priv);
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int v3d_gem_fault(struct vm_fault *vmf);
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vm_fault_t v3d_gem_fault(struct vm_fault *vmf);
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int v3d_mmap(struct file *filp, struct vm_area_struct *vma);
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int v3d_mmap(struct file *filp, struct vm_area_struct *vma);
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struct reservation_object *v3d_prime_res_obj(struct drm_gem_object *obj);
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struct reservation_object *v3d_prime_res_obj(struct drm_gem_object *obj);
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int v3d_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
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int v3d_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
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