Patch "drm/psr: Fix missed entry in PSR setup time table." has been added to the 4.9-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    drm/psr: Fix missed entry in PSR setup time table.

to the 4.9-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-psr-fix-missed-entry-in-psr-setup-time-table.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From bdcc02cf1bb508fc700df7662f55058f651f2621 Mon Sep 17 00:00:00 2001
From: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Date: Fri, 11 May 2018 12:51:42 -0700
Subject: drm/psr: Fix missed entry in PSR setup time table.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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From: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>

commit bdcc02cf1bb508fc700df7662f55058f651f2621 upstream.

Entry corresponding to 220 us setup time was missing. I am not aware of
any specific bug this fixes, but this could potentially result in enabling
PSR on a panel with a higher setup time requirement than supported by the
hardware.

I verified the value is present in eDP spec versions 1.3, 1.4 and 1.4a.

Fixes: 6608804b3d7f ("drm/dp: Add drm_dp_psr_setup_time()")
Cc: stable at vger.kernel.org
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Jose Roberto de Souza <jose.souza at intel.com>
Cc: dri-devel at lists.freedesktop.org
Reviewed-by: José Roberto de Souza <jose.souza at intel.com>
Reviewed-by: Tarun Vyas <tarun.vyas at intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180511195145.3829-3-dhinakaran.pandiyan@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

---
 drivers/gpu/drm/drm_dp_helper.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1065,6 +1065,7 @@ int drm_dp_psr_setup_time(const u8 psr_c
 	static const u16 psr_setup_time_us[] = {
 		PSR_SETUP_TIME(330),
 		PSR_SETUP_TIME(275),
+		PSR_SETUP_TIME(220),
 		PSR_SETUP_TIME(165),
 		PSR_SETUP_TIME(110),
 		PSR_SETUP_TIME(55),


Patches currently in stable-queue which might be from dhinakaran.pandiyan at intel.com are

queue-4.9/drm-psr-fix-missed-entry-in-psr-setup-time-table.patch