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    Subject[PATCH 3.13 079/160] drm/radeon: don't allow runpm=1 on systems with out ATPX
    Date
    3.13.11.3 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Alex Deucher <alexdeucher@gmail.com>

    commit 73acacc7397fe854ed2ab75f1c940fa00faaf15e upstream.

    vgaswitcheroo and the ATPX ACPI methods are required to
    power down the dGPU.

    bug:
    https://bugzilla.kernel.org/show_bug.cgi?id=73901

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/gpu/drm/radeon/radeon_kms.c | 8 +++-----
    1 file changed, 3 insertions(+), 5 deletions(-)

    diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
    index 9b2799c..e0315d2 100644
    --- a/drivers/gpu/drm/radeon/radeon_kms.c
    +++ b/drivers/gpu/drm/radeon/radeon_kms.c
    @@ -107,11 +107,9 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
    flags |= RADEON_IS_PCI;
    }

    - if (radeon_runtime_pm == 1)
    - flags |= RADEON_IS_PX;
    - else if ((radeon_runtime_pm == -1) &&
    - radeon_has_atpx() &&
    - ((flags & RADEON_IS_IGP) == 0))
    + if ((radeon_runtime_pm != 0) &&
    + radeon_has_atpx() &&
    + ((flags & RADEON_IS_IGP) == 0))
    flags |= RADEON_IS_PX;

    /* radeon_device_init should report only fatal error
    --
    1.9.1


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