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agp: alpha nopage

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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>
This commit is contained in:
Nick Piggin 2008-02-04 22:30:04 -08:00 • committed by Linus Torvalds
parent 2f78dcfd30
commit 6d6f8d52fd
1 changed files with 8 additions and 9 deletions
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17
drivers/char/agp/alpha-agp.c
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@ -11,29 +11,28 @@
#include "agp.h" #include "agp.h"
static struct page *alpha_core_agp_vm_nopage(struct vm_area_struct *vma, static int alpha_core_agp_vm_fault(struct vm_area_struct *vma,
unsigned long address, struct vm_fault *vmf)
int *type)
{ {
alpha_agp_info *agp = agp_bridge->dev_private_data; alpha_agp_info *agp = agp_bridge->dev_private_data;
dma_addr_t dma_addr; dma_addr_t dma_addr;
unsigned long pa; unsigned long pa;
struct page *page; 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); pa = agp->ops->translate(agp, dma_addr);
if (pa == (unsigned long)-EINVAL) 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 * Get the page, inc the use count, and return it
*/ */
page = virt_to_page(__va(pa)); page = virt_to_page(__va(pa));
get_page(page); get_page(page);
if (type) vmf->page = page;
*type = VM_FAULT_MINOR; return 0;
return page;
} }
static struct aper_size_info_fixed alpha_core_agp_sizes[] = 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 = { struct vm_operations_struct alpha_core_agp_vm_ops = {
.nopage = alpha_core_agp_vm_nopage, .fault = alpha_core_agp_vm_fault,
}; };