diff options
Diffstat (limited to 'drivers/char/agp/amd64-agp.c')
| -rw-r--r-- | drivers/char/agp/amd64-agp.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 485720486d60..c9f0f250d78f 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -14,6 +14,7 @@ #include <linux/agp_backend.h> #include <linux/mmzone.h> #include <asm/page.h> /* PAGE_SIZE */ +#include <asm/e820.h> #include <asm/k8.h> #include "agp.h" @@ -259,7 +260,6 @@ static const struct agp_bridge_driver amd_8151_driver = { /* Some basic sanity checks for the aperture. */ static int __devinit aperture_valid(u64 aper, u32 size) { - u32 pfn, c; if (aper == 0) { printk(KERN_ERR PFX "No aperture\n"); return 0; @@ -272,14 +272,9 @@ static int __devinit aperture_valid(u64 aper, u32 size) printk(KERN_ERR PFX "Aperture out of bounds\n"); return 0; } - pfn = aper >> PAGE_SHIFT; - for (c = 0; c < size/PAGE_SIZE; c++) { - if (!pfn_valid(pfn + c)) - break; - if (!PageReserved(pfn_to_page(pfn + c))) { - printk(KERN_ERR PFX "Aperture pointing to RAM\n"); - return 0; - } + if (e820_any_mapped(aper, aper + size, E820_RAM)) { + printk(KERN_ERR PFX "Aperture pointing to RAM\n"); + return 0; } /* Request the Aperture. This catches cases when someone else |