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    Subject[PATCH 3.12 078/170] vgaswitcheroo: switch the mux to the igp on power down when runpm is enabled
    Date
    From: Alex Deucher <alexander.deucher@amd.com>

    3.12-stable review patch. If anyone has any objections, please let me know.

    ===============

    commit f2bc561610962693be61425cf913778586d8f9c1 upstream.

    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>
    Signed-off-by: Jiri Slaby <jslaby@suse.cz>
    ---
    drivers/gpu/vga/vga_switcheroo.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    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;
    }
    --
    2.0.0


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