agp: alpha nopage

Convert AGP alpha driver from nopage to fault.
NULL is NOPAGE_SIGBUS, so we aren't changing behaviour there.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c
index aa8f3a39a7044d74fe1652d62ef077fc470b024b..e77c17838c8af6ac0bf0559a20e4055875f7d9a1 100644 (file)
--- a/drivers/char/agp/alpha-agp.c
+++ b/drivers/char/agp/alpha-agp.c
@@ -11,29 +11,28 @@
 
 #include "agp.h"
 
-static struct page *alpha_core_agp_vm_nopage(struct vm_area_struct *vma,
-                                            unsigned long address,
-                                            int *type)
+static int alpha_core_agp_vm_fault(struct vm_area_struct *vma,
+                                       struct vm_fault *vmf)
 {
        alpha_agp_info *agp = agp_bridge->dev_private_data;
        dma_addr_t dma_addr;
        unsigned long pa;
        struct page *page;
 
-       dma_addr = address - vma->vm_start + agp->aperture.bus_base;
+       dma_addr = (unsigned long)vmf->virtual_address - vma->vm_start
+                                               + agp->aperture.bus_base;
        pa = agp->ops->translate(agp, dma_addr);
 
        if (pa == (unsigned long)-EINVAL)
-               return NULL;    /* no translation */
+               return VM_FAULT_SIGBUS; /* no translation */
 
        /*
         * Get the page, inc the use count, and return it
         */
        page = virt_to_page(__va(pa));
        get_page(page);
-       if (type)
-               *type = VM_FAULT_MINOR;
-       return page;
+       vmf->page = page;
+       return 0;
 }
 
 static struct aper_size_info_fixed alpha_core_agp_sizes[] =
@@ -42,7 +41,7 @@ static struct aper_size_info_fixed alpha_core_agp_sizes[] =
 };
 
 struct vm_operations_struct alpha_core_agp_vm_ops = {
-       .nopage = alpha_core_agp_vm_nopage,
+       .fault = alpha_core_agp_vm_fault,
 };