From febe04de3be4bf66f9339d8847db2806d99fd164 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 1 Jul 2009 11:13:07 +0900 Subject: x86: fix usage of bios intcall() Some intcall() misuses the input biosregs as output in cf06de7b9cdd3efee7a59dced1977b3c21d43732 This fixes the problem vga=ask boot option doesn't show enough modes. Signed-off-by: Akinobu Mita LKML-Reference: <20090701021307.GA3127@localhost.localdomain> Signed-off-by: H. Peter Anvin --- arch/x86/boot/video-bios.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch/x86/boot/video-bios.c') diff --git a/arch/x86/boot/video-bios.c b/arch/x86/boot/video-bios.c index d660be492363..49e0c18833e0 100644 --- a/arch/x86/boot/video-bios.c +++ b/arch/x86/boot/video-bios.c @@ -37,14 +37,13 @@ static int set_bios_mode(u8 mode) ireg.al = mode; /* AH=0x00 Set Video Mode */ intcall(0x10, &ireg, NULL); - ireg.ah = 0x0f; /* Get Current Video Mode */ intcall(0x10, &ireg, &oreg); do_restore = 1; /* Assume video contents were lost */ /* Not all BIOSes are clean with the top bit */ - new_mode = ireg.al & 0x7f; + new_mode = oreg.al & 0x7f; if (new_mode == mode) return 0; /* Mode change OK */ -- cgit