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Fixed link list bug in agp_free

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This commit is contained in:
Jeff Hartmann 2000-02-14 04:21:17 +00:00
parent b1d3a9405e
commit fcb9e630da
1 changed files with 13 additions and 2 deletions
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15
linux/agpsupport.c
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@ -166,6 +166,8 @@ int drm_agp_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
-EFAULT);
if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
return -ENOMEM;
memset(entry, 0, sizeof(*entry));
pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
type = (u32) request.type;
@ -181,8 +183,11 @@ int drm_agp_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
entry->pages = pages;
entry->prev = NULL;
entry->next = dev->agp->memory;
printk("dev->agp->memory : %p\n", dev->agp->memory);
printk("entry : %p\n", entry);
if (dev->agp->memory) dev->agp->memory->prev = entry;
dev->agp->memory = entry;
printk("dev->agp->memory : %p\n", dev->agp->memory);
request.handle = entry->handle;
request.physical = memory->physical;
@ -263,9 +268,15 @@ int drm_agp_free(struct inode *inode, struct file *filp, unsigned int cmd,
-EFAULT);
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
#if 0
if (entry->bound) drm_unbind_agp(entry->memory);
entry->prev->next = entry->next;
entry->next->prev = entry->prev;
#endif
if(entry->prev) entry->prev->next = entry->next;
if(entry->next) entry->next->prev = entry->prev;
if((entry->next == NULL) &&
(entry->prev == NULL)) {
dev->agp->memory = NULL;
}
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
return 0;