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sdl: Fix crash when calling sdl_switch() with NULL surface 

This happens for example when doing ctrl-alt-u and segfaults

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Benjamin Herrenschmidt 2014-07-07 15:11:22 +10:00 committed by Gerd Hoffmann
parent 5f5d82ddf1
commit d28d6505bd
1 changed files with 2 additions and 1 deletions
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3
ui/sdl.c
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@ -135,12 +135,13 @@ static void do_sdl_resize(int width, int height, int bpp)
static void sdl_switch(DisplayChangeListener *dcl,
DisplaySurface *new_surface)
{
PixelFormat pf = qemu_pixelformat_from_pixman(new_surface->format);
PixelFormat pf;
/* temporary hack: allows to call sdl_switch to handle scaling changes */
if (new_surface) {
surface = new_surface;
}
pf = qemu_pixelformat_from_pixman(surface->format);
if (!scaling_active) {
do_sdl_resize(surface_width(surface), surface_height(surface), 0);