Re: [PATCH] Fixes: 9697dffb098d ("drm: Turn off Legacy Context Functions")

[Daniel Vetter <daniel@ffwll.ch>]

On Wed, Jun 17, 2015 at 02:03:47PM -0600, Eddie Kovsky wrote:
> Commit 9697dffb098d ("drm: Turn off Legacy Context Functions")
> added checks for legacy features to several functions in the 
> drm driver. It is now possible for the void functions changed by 
> this commit to return an int error code. This patch updates
> the function definitions to return int. This fixes the build warnings:
> 
> warning: ‘return’ with a value, in function returning void
>    return -EINVAL
> 
> Signed-off-by: Eddie Kovsky <ewk@edkovsky.org>

Oops sorry, I spotted this while applying but somehow screwed up and still
pushed out the patch. Dropped it now for real.

Thanks, Daniel

> ---
>  drivers/gpu/drm/drm_context.c | 12 +++++++++---
>  drivers/gpu/drm/drm_legacy.h  |  6 +++---
>  2 files changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_context.c b/drivers/gpu/drm/drm_context.c
> index f3ea657f6574..3c2f4a76f934 100644
> --- a/drivers/gpu/drm/drm_context.c
> +++ b/drivers/gpu/drm/drm_context.c
> @@ -51,7 +51,7 @@ struct drm_ctx_list {
>   * in drm_device::ctx_idr, while holding the drm_device::struct_mutex
>   * lock.
>   */
> -void drm_legacy_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
> +int drm_legacy_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
>  {
>  	if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) &&
>  		drm_core_check_feature(dev, DRIVER_MODESET))
> @@ -60,6 +60,8 @@ void drm_legacy_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
>  	mutex_lock(&dev->struct_mutex);
>  	idr_remove(&dev->ctx_idr, ctx_handle);
>  	mutex_unlock(&dev->struct_mutex);
> +
> +	return 0;
>  }
>  
>  /**
> @@ -107,7 +109,7 @@ int drm_legacy_ctxbitmap_init(struct drm_device * dev)
>   * Free all idr members using drm_ctx_sarea_free helper function
>   * while holding the drm_device::struct_mutex lock.
>   */
> -void drm_legacy_ctxbitmap_cleanup(struct drm_device * dev)
> +int drm_legacy_ctxbitmap_cleanup(struct drm_device * dev)
>  {
>  	if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) &&
>  		drm_core_check_feature(dev, DRIVER_MODESET))
> @@ -116,6 +118,8 @@ void drm_legacy_ctxbitmap_cleanup(struct drm_device * dev)
>  	mutex_lock(&dev->struct_mutex);
>  	idr_destroy(&dev->ctx_idr);
>  	mutex_unlock(&dev->struct_mutex);
> +
> +	return 0;
>  }
>  
>  /**
> @@ -127,7 +131,7 @@ void drm_legacy_ctxbitmap_cleanup(struct drm_device * dev)
>   * @file. Note that after this call returns, new contexts might be added if
>   * the file is still alive.
>   */
> -void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file)
> +int drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file)
>  {
>  	struct drm_ctx_list *pos, *tmp;
>  
> @@ -150,6 +154,8 @@ void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file)
>  	}
>  
>  	mutex_unlock(&dev->ctxlist_mutex);
> +
> +	return 0;
>  }
>  
>  /*@}*/
> diff --git a/drivers/gpu/drm/drm_legacy.h b/drivers/gpu/drm/drm_legacy.h
> index c1dc61473db5..26c16220e475 100644
> --- a/drivers/gpu/drm/drm_legacy.h
> +++ b/drivers/gpu/drm/drm_legacy.h
> @@ -43,9 +43,9 @@ struct drm_file;
>  #define DRM_RESERVED_CONTEXTS		1
>  
>  int drm_legacy_ctxbitmap_init(struct drm_device *dev);
> -void drm_legacy_ctxbitmap_cleanup(struct drm_device *dev);
> -void drm_legacy_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
> -void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file);
> +int drm_legacy_ctxbitmap_cleanup(struct drm_device *dev);
> +int drm_legacy_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
> +int drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file);
>  
>  int drm_legacy_resctx(struct drm_device *d, void *v, struct drm_file *f);
>  int drm_legacy_addctx(struct drm_device *d, void *v, struct drm_file *f);
> -- 
> 2.4.3
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch