[Mesa-stable] [PATCH 07/10] gbm: unify error handling in gbm_dri_bo_import()

[Andres Gomez]

Emil, this patch never landed in master (nor got a R-b).

Is this still relevant? Could you manage to get somebody to review it?

I'd do it myself but I'm quite ignorant on the GBM bits.

On Mon, 2017-10-16 at 17:04 +0100, Emil Velikov wrote:
> From: Emil Velikov <emil.velikov at collabora.com>
> 
> Fold the error handling for image creation/duplication in a single
> place.
> 
> Effectively providing the same errno across the board and plugging a
> memory leak in the GBM_BO_IMPORT_WL_BUFFER case.
> 
> Cc: mesa-stable at lists.freedesktop.org
> Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
> ---
>  src/gbm/backends/dri/gbm_dri.c | 35 +++++++++++++----------------------
>  1 file changed, 13 insertions(+), 22 deletions(-)
> 
> diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c
> index d7cf01fc6b4..c39ee9c9a53 100644
> --- a/src/gbm/backends/dri/gbm_dri.c
> +++ b/src/gbm/backends/dri/gbm_dri.c
> @@ -888,9 +888,9 @@ gbm_dri_bo_import(struct gbm_device *gbm,
>  {
>     struct gbm_dri_device *dri = gbm_dri_device(gbm);
>     struct gbm_dri_bo *bo;
> -   __DRIimage *image;
> +   __DRIimage *image = NULL;
>     unsigned dri_use = 0;
> -   int gbm_format;
> +   int gbm_format = 0;
>     unsigned query; /* EGLBoolean, but we cannot include the header */
>  
>     if (dri->image == NULL) {
> @@ -935,17 +935,9 @@ gbm_dri_bo_import(struct gbm_device *gbm,
>        image = dri->lookup_image(dri->screen, buffer, dri->lookup_user_data);
>        image = dri->image->dupImage(image, NULL);
>        query = dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &dri_format);
> -      if (!query) {
> -         errno = EINVAL;
> -         dri->image->destroyImage(image);
> +      if (!query)
>           break;
> -      }
>        gbm_format = gbm_dri_to_gbm_format(dri_format);
> -      if (gbm_format == 0) {
> -         errno = EINVAL;
> -         dri->image->destroyImage(image);
> -         return NULL;
> -      }
>        break;
>     }
>  
> @@ -973,10 +965,6 @@ gbm_dri_bo_import(struct gbm_device *gbm,
>                                               &fd_data->fd, 1,
>                                               &stride, &offset,
>                                               NULL);
> -      if (image == NULL) {
> -         errno = EINVAL;
> -         return NULL;
> -      }
>        gbm_format = fd_data->format;
>        break;
>     }
> @@ -1008,20 +996,23 @@ gbm_dri_bo_import(struct gbm_device *gbm,
>                                                    fd_data->offsets,
>                                                    0, 0, 0, 0,
>                                                    &error, NULL);
> -      if (image == NULL) {
> -         errno = ENOSYS;
> -         return NULL;
> -      }
> -
>        gbm_format = fourcc;
>        break;
>     }
>  
>     default:
> -      errno = ENOSYS;
> -      return NULL;
> +      break;
>     }
>  
> +   if (image == NULL) {
> +      errno = EINVAL;
> +      return NULL;
> +   }
> +   if (gbm_format == 0) {
> +      errno = EINVAL;
> +      dri->image->destroyImage(image);
> +      return NULL;
> +   }
>  
>     bo = calloc(1, sizeof *bo);
>     if (bo == NULL) {
-- 
Br,

Andres