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authorSouptick Joarder <jrdr.linux@gmail.com>2018-07-30 11:52:31 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2018-07-30 11:52:31 +0100
commit7794ec7774066eb12af67a0a756bddd66f2d50f8 (patch)
treebf3b8eeee5c2a1f8150f7328cd7eae5620f76c89 /drivers/gpu/drm/armada
parent830aadceae20c08704562f0b83fdd0f0062d06c6 (diff)
drm/armada: Adding new typedef vm_fault_t
Use new return type vm_fault_t for fault handler in struct vm_operations_struct. 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. commit 1c8f422059ae ("mm: change return type to vm_fault_t") Previously vm_insert_pfn() returns err which driver mapped into VM_FAULT_* type. The new function vmf_insert_pfn() will replace this inefficiency by returning VM_FAULT_* type. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/armada')
-rw-r--r--drivers/gpu/drm/armada/armada_gem.c15
1 files changed, 2 insertions, 13 deletions
diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index 3fb37c75c065..892c1d9304bb 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -13,25 +13,14 @@
#include <drm/armada_drm.h>
#include "armada_ioctlP.h"
-static int armada_gem_vm_fault(struct vm_fault *vmf)
+static vm_fault_t armada_gem_vm_fault(struct vm_fault *vmf)
{
struct drm_gem_object *gobj = vmf->vma->vm_private_data;
struct armada_gem_object *obj = drm_to_armada_gem(gobj);
unsigned long pfn = obj->phys_addr >> PAGE_SHIFT;
- int ret;
pfn += (vmf->address - vmf->vma->vm_start) >> PAGE_SHIFT;
- ret = vm_insert_pfn(vmf->vma, vmf->address, pfn);
-
- switch (ret) {
- case 0:
- case -EBUSY:
- return VM_FAULT_NOPAGE;
- case -ENOMEM:
- return VM_FAULT_OOM;
- default:
- return VM_FAULT_SIGBUS;
- }
+ return vmf_insert_pfn(vmf->vma, vmf->address, pfn);
}
const struct vm_operations_struct armada_gem_vm_ops = {