Commit 66bb7e1d authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau/gpio: place upper limit on using old-school tvdac bios data 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 9da49599

drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c

+2 −2
Original line number Diff line number Diff line
@@ -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) {