This is a note to let you know that I've just added the patch titled
drm/i915: Fix calculation of backlight value in combined mode
to the 2.6.37-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-fix-calculation-of-backlight-value-in-combined-mode.patch
and it can be found in the queue-2.6.37 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
Date: Fri, 11 Mar 2011 12:34:41 +0100
From: Takashi Iwai <[email protected]>
To: [email protected]
Cc: Indan Zupancic <[email protected]>, Keith Packard <[email protected]>, Jesse
Barnes <[email protected]>, Chris Wilson <[email protected]>
Subject: drm/i915: Fix calculation of backlight value in combined mode
From: Takashi Iwai <[email protected]>
commit ba3820ade317ee36e496b9b40d2ec3987dd4aef0 upstream.
[The upstream commit above is a combination of revert + one-liner fix.
This patch contains only the latter that is needed for 2.6.37.x.]
This patch fixes the backlight level calculation for combination mode
used in some models like GM45. It's due to a wrong bit shift
introduced by the commit a95735569312f2ab0c80425e2cd1e5cb0b4e1870
drm/i915: Refactor panel backlight controls
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=23472
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34524
Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=672946
Signed-off-by: Takashi Iwai <[email protected]>
---
drivers/gpu/drm/i915/intel_panel.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -176,7 +176,6 @@ u32 intel_panel_get_backlight(struct drm
val &= ~1;
pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
val *= lbpc;
- val >>= 1;
}
}
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.37/drm-i915-fix-calculation-of-backlight-value-in-combined-mode.patch
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