fbmem: Check virtual screen sizes in fb_set_var()
Verify that the fbdev or drm driver correctly adjusted the virtual screen sizes. On failure report the failing driver and reject the screen size change. Signed-off-by:Helge Deller <deller@gmx.de> Reviewed-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: stable@vger.kernel.org # v5.4+
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e64242ca