[Nouveau] [Bug 31122] Cannot control backlight intensity on Powerbook

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31122

--- Comment #18 from Karol Herbst <karolherbst at gmail.com> ---
Comment on attachment 125642
  --> https://bugs.freedesktop.org/attachment.cgi?id=125642
backlight control w/ gpio check

Review of attachment 125642:
-----------------------------------------------------------------

::: nouveau_backlight.c.orig
@@ +69,5 @@
> +        else
> +                level = val + NV30_BL_MIN_LEVEL - 1;
> +
> +        nvif_wr32(device, NV30_PMC_BACKLIGHT,
> +                 (level << 16) + 0x80000535);  /* workaround for disabled backlight after waking from suspend */

also like imirkin said: use | instead of +

((level << 16) + 0000535) | 0x80000000

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