Patch "drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting" has been added to the 4.9-stable tree

Patch "drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting" has been added to the 4.9-stable tree

[gregkh]

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

    drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting

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-i915-dsi-fix-chv_exec_gpio-disabling-the-gpios-it-is-setting.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@vger.kernel.org> know about it.


>From 22ca0d4991169b76e753d767a45f1105c356bbb8 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Thu, 1 Dec 2016 21:29:09 +0100
Subject: drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Hans de Goede <hdegoede@redhat.com>

commit 22ca0d4991169b76e753d767a45f1105c356bbb8 upstream.

Set the CHV_GPIO_GPIOEN bit when updating GPIOs from chv_exec_gpio.

Fixes: a0a6d4ffd2ad ("drm/i915/dsi: add support for gpio elements on CHV")
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161201202925.12220-3-hdegoede@redhat.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit b2b45fcd921e864a5e9bbc7aa55dee96d5e11c06)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -296,7 +296,8 @@ static void chv_exec_gpio(struct drm_i91
 	mutex_lock(&dev_priv->sb_lock);
 	vlv_iosf_sb_write(dev_priv, port, cfg1, 0);
 	vlv_iosf_sb_write(dev_priv, port, cfg0,
-			  CHV_GPIO_GPIOCFG_GPO | CHV_GPIO_GPIOTXSTATE(value));
+			  CHV_GPIO_GPIOEN | CHV_GPIO_GPIOCFG_GPO |
+			  CHV_GPIO_GPIOTXSTATE(value));
 	mutex_unlock(&dev_priv->sb_lock);
 }
 


Patches currently in stable-queue which might be from hdegoede@redhat.com are

queue-4.9/acpi-video-add-force_native-quirk-for-hp-pavilion-dv6.patch
queue-4.9/acpi-video-add-force_native-quirk-for-dell-xps-17-l702x.patch
queue-4.9/drm-i915-dsi-fix-chv_exec_gpio-disabling-the-gpios-it-is-setting.patch
queue-4.9/drm-i915-dsi-do-not-clear-dpounit_clock_gate_disable-from-vlv_init_display_clock_gating.patch