From 85a00d9bbfb4704fbf368944b1cb9fed8f1598c5 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Wed, 22 Sep 2010 13:05:04 -0700 Subject: efifb: check that the base address is plausible on pci systems Some Apple machines have identical DMI data but different memory configurations for the video. Given that, check that the address in our table is actually within the range of a PCI BAR on a VGA device in the machine. This also fixes up the return value from set_system(), which has always been wrong, but never resulted in bad behavior since there's only ever been one matching entry in the dmi table. The patch 1) stops people's machines from crashing when we get their display wrong, which seems to be unfortunately inevitable, 2) allows us to support identical dmi data with differing video memory configurations This also adds me as the efifb maintainer, since I've effectively been acting as such for quite some time. Signed-off-by: Peter Jones Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/efifb.c | 61 +++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 49 insertions(+), 12 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c index 815f84b07933..c082b616f390 100644 --- a/drivers/video/efifb.c +++ b/drivers/video/efifb.c @@ -13,7 +13,7 @@ #include #include #include - +#include #include