From: Nick Piggin <npiggin@suse.de>
Date: Tue, 5 Feb 2008 06:30:04 +0000 (-0800)
Subject: agp: alpha nopage
X-Git-Tag: firefly_0821_release~23388
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6d6f8d52fd0ff5d3660368232f71c3224d7508e1;p=firefly-linux-kernel-4.4.55.git

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 aa8f3a39a704..e77c17838c8a 100644
--- 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,
 };