[PATCH] drm/msm: return fence_fd = -1 if gem_submit fails

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.pado...@collabora.co.uk>

Previously we were returning garbage here, fix it by setting it to -1
before the first possible point of failure.

Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
---
 drivers/gpu/drm/msm/msm_gem_submit.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c 
b/drivers/gpu/drm/msm/msm_gem_submit.c
index 166e84e..c102b55 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -383,10 +383,13 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void 
*data,
        struct msm_gpu *gpu = priv->gpu;
        struct dma_fence *in_fence = NULL;
        struct sync_file *sync_file = NULL;
+       int in_fence_fd = args->fence_fd;
        int out_fence_fd = -1;
        unsigned i;
        int ret;

+       args->fence_fd = -1;
+
        if (!gpu)
                return -ENXIO;

@@ -427,7 +430,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
                goto out;

        if (args->flags & MSM_SUBMIT_FENCE_FD_IN) {
-               in_fence = sync_file_get_fence(args->fence_fd);
+               in_fence = sync_file_get_fence(in_fence_fd);

                if (!in_fence) {
                        ret = -EINVAL;
-- 
2.5.5