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exa: avoid calling non existent SourceValidate callback 

In unaccel path we were unconditionaly calling the SourceValidate
callback but in some case it could be NULL. Check if we have a
valid callback before calling it.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jerome Glisse 2010-04-26 15:55:26 +02:00 committed by Keith Packard
parent 35d208125f
commit daa6f9308f
1 changed files with 5 additions and 3 deletions
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8
exa/exa_unaccel.c
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@ -462,9 +462,11 @@ ExaSrcValidate(DrawablePtr pDrawable,
REGION_UNION(pScreen, dst, dst, &reg); REGION_UNION(pScreen, dst, dst, &reg);
REGION_UNINIT(pScreen, &reg); REGION_UNINIT(pScreen, &reg);
swap(pExaScr, pScreen, SourceValidate); if (pScreen->SourceValidate) {
pScreen->SourceValidate(pDrawable, x, y, width, height); swap(pExaScr, pScreen, SourceValidate);
swap(pExaScr, pScreen, SourceValidate); pScreen->SourceValidate(pDrawable, x, y, width, height);
swap(pExaScr, pScreen, SourceValidate);
}
} }
static Bool static Bool