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    Subject[ 077/122] drm/radeon: fix fence related segfault in CS
    Date
    From: Greg KH <gregkh@linuxfoundation.org>

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

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

    From: Christian König <deathsimple@vodafone.de>

    commit 93bf888c5c730605e3470f5d2381f296eda88d79 upstream.

    Don't return success if scheduling the IB fails, otherwise
    we end up with an oops in ttm_eu_fence_buffer_objects.

    Signed-off-by: Christian König <deathsimple@vodafone.de>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>
    Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
    Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/radeon/radeon_cs.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/gpu/drm/radeon/radeon_cs.c
    +++ b/drivers/gpu/drm/radeon/radeon_cs.c
    @@ -377,7 +377,7 @@ static int radeon_cs_ib_chunk(struct rad
    if (r) {
    DRM_ERROR("Failed to schedule IB !\n");
    }
    - return 0;
    + return r;
    }

    static int radeon_bo_vm_update_pte(struct radeon_cs_parser *parser,

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