From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 19 May 2014 18:04:43 +0000 (-0400)
Subject: vgaswitcheroo: switch the mux to the igp on power down when runpm is enabled
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f2bc561610962693be61425cf913778586d8f9c1;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

vgaswitcheroo: switch the mux to the igp on power down when runpm is enabled

Avoids blank screens on muxed systems when runpm is active.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75917

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---

diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index ec0ae2d1686a..6866448083b2 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -623,7 +623,8 @@ static int vga_switcheroo_runtime_suspend(struct device *dev)
 	ret = dev->bus->pm->runtime_suspend(dev);
 	if (ret)
 		return ret;
-
+	if (vgasr_priv.handler->switchto)
+		vgasr_priv.handler->switchto(VGA_SWITCHEROO_IGD);
 	vga_switcheroo_power_switch(pdev, VGA_SWITCHEROO_OFF);
 	return 0;
 }