Patch "drm/i915: Restore lost DPLL register write on gen2-4" has been added to the 3.14-stable tree
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This is a note to let you know that I've just added the patch titled
drm/i915: Restore lost DPLL register write on gen2-4
to the 3.14-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-restore-lost-dpll-register-write-on-gen2-4.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
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8e7a65aa70bcc1235a44e40ae0da5056525fe081Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]>
Date: Wed, 7 Oct 2015 22:08:24 +0300
Subject: drm/i915: Restore lost DPLL register write on gen2-4
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From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]>
commit 8e7a65aa70bcc1235a44e40ae0da5056525fe081 upstream.
We accidentally lost the initial DPLL register write in 1c4e02746147 drm/i915: Fix DVO 2x clock enable on 830M
The "three times for luck" hack probably saved us from a total disaster. But anyway, bring the initial write back so that the code actually makes some sense.
References: http://mid.gmane.org/CAN_QmVyMaArxYgEcVVsGvsMo7-6ohZr8HmF5VhkkL4i9KOmrhw@mail.gmail.com
--- drivers/gpu/drm/i915/intel_display.c | 2 ++ 1 file changed, 2 insertions(+)
drivers/gpu/drm/i915/intel_display.c +2 -0
@@ -1451,6 +1451,8 @@ static void i9xx_enable_pll(struct intelI915_WRITE (reg, dpll); +I915_WRITE (reg, dpll); +/* Wait for the clocks to stabilize. */ POSTING_READ (reg);udelay (150 );
Patches currently in stable-queue which might be from [email protected] are
queue-3.14/drm-i915-restore-lost-dpll-register-write-on-gen2-4.patch