Without this, querying the backlight value returns half of the value it has been set to. Hilarity ensues, as my user-space likes to query first before incrementing / decrementing brightness, leading to brightness collapsing to near as I try to adjust.
-- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
From db647ad5ff5ce80e1a515411db7e4c6587c7e798 Mon Sep 17 00:00:00 2001 From: Peter Clifton <pc...@cam.ac.uk> Date: Fri, 28 Jan 2011 22:08:40 +0000 Subject: [PATCH] drm/intel: Fix brightness value query when in combination mode --- drivers/gpu/drm/i915/intel_panel.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 4ab4239..1795823 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -208,7 +208,6 @@ u32 intel_panel_get_backlight(struct drm_device *dev) val &= ~1; pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc); val *= lbpc; - val >>= 1; } } -- 1.7.2.3
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