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path: root/drivers/char/drm/radeon_cp.c
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Diffstat (limited to 'drivers/char/drm/radeon_cp.c')
-rw-r--r--drivers/char/drm/radeon_cp.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c
index 5ed965688293..c1850ecac302 100644
--- a/drivers/char/drm/radeon_cp.c
+++ b/drivers/char/drm/radeon_cp.c
@@ -1560,8 +1560,8 @@ static int radeon_do_init_cp(drm_device_t * dev, drm_radeon_init_t * init)
if (dev_priv->flags & RADEON_IS_AGP) {
base = dev->agp->base;
/* Check if valid */
- if ((base + dev_priv->gart_size) > dev_priv->fb_location &&
- base < (dev_priv->fb_location + dev_priv->fb_size)) {
+ if ((base + dev_priv->gart_size - 1) >= dev_priv->fb_location &&
+ base < (dev_priv->fb_location + dev_priv->fb_size - 1)) {
DRM_INFO("Can't use AGP base @0x%08lx, won't fit\n",
dev->agp->base);
base = 0;
@@ -1571,8 +1571,8 @@ static int radeon_do_init_cp(drm_device_t * dev, drm_radeon_init_t * init)
/* If not or if AGP is at 0 (Macs), try to put it elsewhere */
if (base == 0) {
base = dev_priv->fb_location + dev_priv->fb_size;
- if (((base + dev_priv->gart_size) & 0xfffffffful)
- < base)
+ if (base < dev_priv->fb_location ||
+ ((base + dev_priv->gart_size) & 0xfffffffful) < base)
base = dev_priv->fb_location
- dev_priv->gart_size;
}