[PATCH xfree86] Skip SetCursor when vtSema is FALSE.

[Keith Packard]

Adam Jackson <ajax at nwnk.net> writes:

> On Wed, 2014-10-22 at 12:55 +0530, Yogish Kulkarni wrote:
>> Consider below sequence -
>> 1) Cursor is removed : isUp will be FALSE if HW cursor is set.
>> 2) VT switched away from X : vtSema becomes FALSE.
>> 3) xf86CursorSetCursor is called with non-null CursorPtr :
>> Saves the passed in CursorPtr, fallbacks to SW cursor and invokes
>> spriteFuncs->SetCursor which saves the area under cursor and restores
>> the cursor. This sets isUp to TRUE and as vtSema is FALSE saved data
>> is garbage.
>> 4) VT switched to X : vtSema becomes TRUE. xf86Cursor enable fb access
>> is called which will remove the SW cursor, i.e copies saved data in #3
>> to screen.
>> 
>> This results to momentary garbage data on screen. Hence when !vtSema
>> skip spriteFuncs->SetCursor.
>> 
>> X.Org Bug 85313 <https://bugs.freedesktop.org/show_bug.cgi?id=85313>
>
> Reviewed-by: Adam Jackson <ajax at redhat.com>

Merged (with fixup for master).
   839f053..df6a3a0  master -> master

-- 
keith.packard at intel.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 810 bytes
Desc: not available
URL: <http://lists.x.org/archives/xorg-devel/attachments/20141027/78f9efca/attachment.sig>