diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-07-01 11:13:07 +0900 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-07-04 12:56:32 -0700 |
| commit | febe04de3be4bf66f9339d8847db2806d99fd164 (patch) | |
| tree | e1143d42fc562326196b3eeead563c70449dc019 /arch/x86/boot/video-vesa.c | |
| parent | 22a26e6663008e1fc4d1467aaff7e775124bce31 (diff) | |
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 <akinobu.mita@gmail.com>
LKML-Reference: <20090701021307.GA3127@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/boot/video-vesa.c')
| -rw-r--r-- | arch/x86/boot/video-vesa.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c index c700147d6ff..275dd177f19 100644 --- a/arch/x86/boot/video-vesa.c +++ b/arch/x86/boot/video-vesa.c @@ -45,7 +45,7 @@ static int vesa_probe(void) ireg.di = (size_t)&vginfo; intcall(0x10, &ireg, &oreg); - if (ireg.ax != 0x004f || + if (oreg.ax != 0x004f || vginfo.signature != VESA_MAGIC || vginfo.version < 0x0102) return 0; /* Not present */ @@ -70,7 +70,7 @@ static int vesa_probe(void) ireg.di = (size_t)&vminfo; intcall(0x10, &ireg, &oreg); - if (ireg.ax != 0x004f) + if (oreg.ax != 0x004f) continue; if ((vminfo.mode_attr & 0x15) == 0x05) { |