diff options
| author | Markus Elfring <elfring@users.sourceforge.net> | 2016-08-18 22:35:14 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-08-19 10:58:55 +0200 |
| commit | 7ad61e6b4a79c5057eeb2d6062b0021e33ddc9f6 (patch) | |
| tree | a53f741e99eefbec63bf1b95b49625bea16df286 /drivers/gpu | |
| parent | a6e3918bcdb1253083f962d747ec699bdb4bacd9 (diff) | |
virtio-gpu: Use memdup_user() rather than duplicating its implementation
Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/401e68fc-5515-7a7a-be2e-503dee676b34@users.sourceforge.net
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_ioctl.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index c046903cb47b..512e7cddcbae 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -152,15 +152,10 @@ static int virtio_gpu_execbuffer(struct drm_device *dev, if (ret) goto out_free; - buf = kmalloc(exbuf->size, GFP_KERNEL); - if (!buf) { - ret = -ENOMEM; - goto out_unresv; - } - if (copy_from_user(buf, (void __user *)(uintptr_t)exbuf->command, - exbuf->size)) { - kfree(buf); - ret = -EFAULT; + buf = memdup_user((void __user *)(uintptr_t)exbuf->command, + exbuf->size); + if (IS_ERR(buf)) { + ret = PTR_ERR(buf); goto out_unresv; } virtio_gpu_cmd_submit(vgdev, buf, exbuf->size, |