virtgpu: remove redundant task_comm copying

Remove redundant task name copying because:

1. task->comm is already NUL-terminated
2. virtio_gpu_context_create() trims passed dbgname anyway

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: http://patchwork.freedesktop.org/patch/msgid/588612bbc672e8b598e10f79fcbc041122e844ba.1504202471.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 6400506..65060c0 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -272,20 +272,18 @@ int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
        struct virtio_gpu_device *vgdev = dev->dev_private;
        struct virtio_gpu_fpriv *vfpriv;
        uint32_t id;
-       char dbgname[64], tmpname[TASK_COMM_LEN];
+       char dbgname[TASK_COMM_LEN];
 
        /* can't create contexts without 3d renderer */
        if (!vgdev->has_virgl_3d)
                return 0;
 
-       get_task_comm(tmpname, current);
-       snprintf(dbgname, sizeof(dbgname), "%s", tmpname);
-       dbgname[63] = 0;
        /* allocate a virt GPU context for this opener */
        vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL);
        if (!vfpriv)
                return -ENOMEM;
 
+       get_task_comm(dbgname, current);
        virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id);
 
        vfpriv->ctx_id = id;