diff options
author | Souptick Joarder <jrdr.linux@gmail.com> | 2018-05-29 19:17:27 +0530 |
---|---|---|
committer | Lucas Stach <l.stach@pengutronix.de> | 2018-08-06 15:24:18 +0200 |
commit | cfad05a24dcb2bf09ba6438e0843c6a0ed90381c (patch) | |
tree | b21454557122ace82b66a31284b644359194ee2b /drivers/gpu/drm/etnaviv/etnaviv_gem.c | |
parent | a0780bb1df60f00e4573db7bd53e7039e9eee1cb (diff) |
drm/etnaviv: change return type to vm_fault_t
Use new return type vm_fault_t for fault handler. For
now, this is just documenting that the function returns
a VM_FAULT value rather than an errno. Once all instances
are converted, vm_fault_t will become a distinct type.
Ref- commit 1c8f422059ae ("mm: change return type to vm_fault_t")
Previously vm_insert_page() returns err which driver
mapped into VM_FAULT_* type. The new function
vmf_insert_page() will replace this inefficiency by
returning VM_FAULT_* type.
vmf_error() is the newly introduce inline function
in 4.17-rc6.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_gem.c')
-rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_gem.c | 37 |
1 files changed, 9 insertions, 28 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index 209ef1274b80..1fa74226db91 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -169,31 +169,30 @@ int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma) return obj->ops->mmap(obj, vma); } -int etnaviv_gem_fault(struct vm_fault *vmf) +vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct drm_gem_object *obj = vma->vm_private_data; struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj); struct page **pages, *page; pgoff_t pgoff; - int ret; + int err; /* * Make sure we don't parallel update on a fault, nor move or remove - * something from beneath our feet. Note that vm_insert_page() is + * something from beneath our feet. Note that vmf_insert_page() is * specifically coded to take care of this, so we don't have to. */ - ret = mutex_lock_interruptible(&etnaviv_obj->lock); - if (ret) - goto out; - + err = mutex_lock_interruptible(&etnaviv_obj->lock); + if (err) + return VM_FAULT_NOPAGE; /* make sure we have pages attached now */ pages = etnaviv_gem_get_pages(etnaviv_obj); mutex_unlock(&etnaviv_obj->lock); if (IS_ERR(pages)) { - ret = PTR_ERR(pages); - goto out; + err = PTR_ERR(pages); + return vmf_error(err); } /* We don't use vmf->pgoff since that has the fake offset: */ @@ -204,25 +203,7 @@ int etnaviv_gem_fault(struct vm_fault *vmf) VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, page_to_pfn(page), page_to_pfn(page) << PAGE_SHIFT); - ret = vm_insert_page(vma, vmf->address, page); - -out: - switch (ret) { - case -EAGAIN: - case 0: - case -ERESTARTSYS: - case -EINTR: - case -EBUSY: - /* - * EBUSY is ok: this just means that another thread - * already did the job. - */ - return VM_FAULT_NOPAGE; - case -ENOMEM: - return VM_FAULT_OOM; - default: - return VM_FAULT_SIGBUS; - } + return vmf_insert_page(vma, vmf->address, page); } int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset) |