Re: [PATCH] drm/radeon: Include swiotlb.h if SWIOTLB configured.

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On Mon, Aug 13, 2012 at 05:26:03PM +0800, Huacai Chen wrote:
> When SWIOTLB is configured, if without this patch kernel compilation
> fails with such error messages:
> 
> drivers/gpu/drm/radeon/radeon_ttm.c: In function 'radeon_ttm_tt_populate':
> drivers/gpu/drm/radeon/radeon_ttm.c:606:2: error: implicit declaration of function 'swiotlb_nr_tbl'
> drivers/gpu/drm/radeon/radeon_ttm.c:607:3: warning: passing argument 2 of 'ttm_dma_populate' from incompatible pointer type
> include/drm/ttm/ttm_page_alloc.h:81:12: note: expected 'struct device *' but argument is of type 'struct device *'
> drivers/gpu/drm/radeon/radeon_ttm.c: In function 'radeon_ttm_tt_unpopulate':
> drivers/gpu/drm/radeon/radeon_ttm.c:653:3: warning: passing argument 2 of 'ttm_dma_unpopulate' from incompatible pointer type
> include/drm/ttm/ttm_page_alloc.h:82:13: note: expected 'struct device *' but argument is of type 'struct device *'
> 
> Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
> Signed-off-by: Hongliang Tao <taohl@xxxxxxxxxx>
> Signed-off-by: Hua Yan <yanh@xxxxxxxxxx>
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx

Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

> ---
>  drivers/gpu/drm/radeon/radeon_ttm.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index 5b71c71..fc3ac22 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -41,6 +41,10 @@
>  #include "radeon_reg.h"
>  #include "radeon.h"
>  
> +#ifdef CONFIG_SWIOTLB
> +#include <linux/swiotlb.h>
> +#endif
> +
>  #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
>  
>  static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
> -- 
> 1.7.7.3
> 
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