x86/simplefb: Fix overflow causing bogus fall-back
authorTom Gundersen <teg@jklm.no>
Tue, 1 Oct 2013 16:18:40 +0000 (18:18 +0200)
committerIngo Molnar <mingo@kernel.org>
Wed, 2 Oct 2013 05:50:40 +0000 (07:50 +0200)
commite33a29a5ae711162c6b6fefc0a2ef18f4a4254bf
tree292279e5e312b12e60598caab00434ddd21c536f
parent669fc2f0c70a6e14eefc503b72ce350448e9634e
x86/simplefb: Fix overflow causing bogus fall-back

On my MacBook Air lfb_size is 4M, which makes the bitshit
overflow (to 256GB - larger than 32 bits), meaning we fall
back to efifb unnecessarily.

Cast to u64 to avoid the overflow.

Signed-off-by: Tom Gundersen <teg@jklm.no>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Link: http://lkml.kernel.org/r/1380644320-1026-1-git-send-email-teg@jklm.no
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/sysfb_simplefb.c