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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-11-13 08:36:52 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-11-13 08:37:13 +0100 |
| commit | 92327f1f6e57962b75e525eb34e11dfa03191332 (patch) | |
| tree | d0df3bba7a80f234fdf86be05aab35c0fbdf9f59 /lib | |
| parent | 8331fc5c1e6b99db4e5d94bc124bad5affe83059 (diff) | |
| download | barebox-92327f1f6e57962b75e525eb34e11dfa03191332.tar.gz barebox-92327f1f6e57962b75e525eb34e11dfa03191332.tar.xz | |
graphics_utils: check for valid framebuffer before creating a screen
Otherwise we crash later when we try to print on that screen.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/gui/graphic_utils.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/gui/graphic_utils.c b/lib/gui/graphic_utils.c index 4c1885d55b..2fe9fa358a 100644 --- a/lib/gui/graphic_utils.c +++ b/lib/gui/graphic_utils.c @@ -249,6 +249,10 @@ struct screen *fb_create_screen(struct fb_info *info) { struct screen *sc; + if (!info->xres || !info->yres || !info->line_length || + !info->screen_base) + return ERR_PTR(-EINVAL); + sc = xzalloc(sizeof(*sc)); sc->s.x = 0; |