usb: mon: Change return type to vm_fault_t

Use new return type vm_fault_t for the 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.

Reference commit id->
1c8f422059ae5da07db7406ab916203f9417e396

---
v2: Modified the change logs.

 drivers/usb/mon/mon_bin.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
1.9.1

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index 2761fad..34e866ad 100644
@@ -1227,7 +1227,7 @@ static void mon_bin_vma_close(struct vm_area_struct *vma)
 /*
  * Map ring pages to user space.
  */
-static int mon_bin_vma_fault(struct vm_fault *vmf)
+static vm_fault_t mon_bin_vma_fault(struct vm_fault *vmf)
 {
 	struct mon_reader_bin *rp = vmf->vma->vm_private_data;
 	unsigned long offset, chunk_idx;