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authorDave Airlie <airlied@starflyer.(none)>2005-08-05 14:11:22 +0200
committerDave Airlie <airlied@linux.ie>2005-08-05 14:11:22 +0200
commitd1f2b55ad2c11f46e30547a9f7754e99b478348e (patch)
treecabf9060c4f6cb419c7ed7fdcbcc6b6a91a83ac1 /drivers/char/drm/drm_context.c
parentdrm: copy the right data back to userspace for getreserved contexts ioctl (diff)
downloadlinux-d1f2b55ad2c11f46e30547a9f7754e99b478348e.tar.xz
linux-d1f2b55ad2c11f46e30547a9f7754e99b478348e.zip
drm: updated DRM map patch for 32/64 bit systems
I basically combined Paul's patches with additions that I had made for PCI scatter gather. I also tried more carefully to avoid problems with the same token assigned multiple times while trying to use the base address in the token if possible to gain as much backward compatibility as possible for broken DRI clients. From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm/drm_context.c')
-rw-r--r--drivers/char/drm/drm_context.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/char/drm/drm_context.c b/drivers/char/drm/drm_context.c
index 5af46c9830ec..f515567e5b6f 100644
--- a/drivers/char/drm/drm_context.c
+++ b/drivers/char/drm/drm_context.c
@@ -212,6 +212,7 @@ int drm_getsareactx(struct inode *inode, struct file *filp,
drm_ctx_priv_map_t __user *argp = (void __user *)arg;
drm_ctx_priv_map_t request;
drm_map_t *map;
+ drm_map_list_t *_entry;
if (copy_from_user(&request, argp, sizeof(request)))
return -EFAULT;
@@ -225,7 +226,17 @@ int drm_getsareactx(struct inode *inode, struct file *filp,
map = dev->context_sareas[request.ctx_id];
up(&dev->struct_sem);
- request.handle = (void *) map->offset;
+ request.handle = 0;
+ list_for_each_entry(_entry, &dev->maplist->head,head) {
+ if (_entry->map == map) {
+ request.handle = (void *)(unsigned long)_entry->user_token;
+ break;
+ }
+ }
+ if (request.handle == 0)
+ return -EINVAL;
+
+
if (copy_to_user(argp, &request, sizeof(request)))
return -EFAULT;
return 0;
@@ -262,7 +273,7 @@ int drm_setsareactx(struct inode *inode, struct file *filp,
list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map
- && r_list->map->offset == (unsigned long) request.handle)
+ && r_list->user_token == (unsigned long) request.handle)
goto found;
}
bad: