[PATCH libdrm 2/3] amdgpu: don't mess with shared_handle if amdgpu_bo_import() fails

[Nicolai Hähnle]

I don't think is correct. The incoming handle is in shared_handle, not 
in handle. Once the code block around line 310 has executed, 
shared_handle is the handle produced by drmPrimeFDToHandle, and closing 
it on error (as the code currently does) should be the correct thing to do.

The only possible issue is that I'm seeing is that perhaps the handle 
should be closed _before_ the unlock. Maybe someone else knows the details.

Cheers,
Nicolai

On 22.01.2017 19:48, Emil Velikov wrote:
> Do not close the handle if someone else has created it. Afaict there's
> no change of ownership implied if the function fails. Thus the caller is
> responsible to doing the right thing - trying again, closing the handle
> and/or other.
>
> Cc: amd-gfx at lists.freedesktop.org
> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
> ---
> Not 100% sure if it's the correct thing.
> ---
>  amdgpu/amdgpu_bo.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
> index c9f31587..24fa8880 100644
> --- a/amdgpu/amdgpu_bo.c
> +++ b/amdgpu/amdgpu_bo.c
> @@ -310,7 +310,6 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
>  		size = lseek(shared_handle, 0, SEEK_END);
>  		if (size == (off_t)-1) {
>  			pthread_mutex_unlock(&dev->bo_table_mutex);
> -			amdgpu_close_kms_handle(dev, handle);
>  			return -errno;
>  		}
>  		lseek(shared_handle, 0, SEEK_SET);
> @@ -355,9 +354,6 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
>  	bo = calloc(1, sizeof(struct amdgpu_bo));
>  	if (!bo) {
>  		pthread_mutex_unlock(&dev->bo_table_mutex);
> -		if (type == amdgpu_bo_handle_type_dma_buf_fd) {
> -			amdgpu_close_kms_handle(dev, shared_handle);
> -		}
>  		return -ENOMEM;
>  	}
>
>