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drm/nouveau/gpio: place upper limit on using old-school tvdac bios data
author
Ben Skeggs
<bskeggs@redhat.com>
Wed, 21 Nov 2012 05:04:51 +0000
(15:04 +1000)
committer
Ben Skeggs
<bskeggs@redhat.com>
Wed, 28 Nov 2012 23:56:36 +0000
(09:56 +1000)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
patch
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diff --git
a/drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
b/drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
index
4c9f1e5
..
c90d4aa
100644
(file)
--- a/
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
+++ b/
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
@@
-101,8
+101,8
@@
dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
}
/* DCB 2.2, fixed TVDAC GPIO data */
- if ((entry = dcb_table(bios, &ver, &hdr, &cnt, &len))
&& ver >= 0x22
) {
- if (func == DCB_GPIO_TVDAC0) {
+ if ((entry = dcb_table(bios, &ver, &hdr, &cnt, &len))) {
+ if (
ver >= 0x22 && ver < 0x30 &&
func == DCB_GPIO_TVDAC0) {
u8 conf = nv_ro08(bios, entry - 5);
u8 addr = nv_ro08(bios, entry - 4);
if (conf & 0x01) {