[PATCH 3/4] drm/xe: Annotate multiple mmio pointers with __iomem

[Matt Roper]

On Tue, Jan 09, 2024 at 12:24:04PM +0100, Thomas Hellström wrote:
> There are a couple of pointers pointing to MMIO space. Annotate them
> with __iomem and fix the corresponding sparse warnings.
> 
> Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
> Fixes: 3b0d4a557996 ("drm/xe: Move register MMIO into xe_tile")
> Fixes: 399a13323f0d ("drm/xe: add 28-bit address support in struct xe_reg")
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Matthew Brost <matthew.brost at intel.com>
> Cc: Lucas De Marchi <lucas.demarchi at intel.com>
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Cc: Koby Elbaz <kelbaz at habana.ai>
> Cc: Ofir Bitton <obitton at habana.ai>
> Cc: Moti Haimovski <mhaimovski at habana.ai>
> Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/xe/xe_device_types.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
> index 171e8615d184..e0da2e3ca426 100644
> --- a/drivers/gpu/drm/xe/xe_device_types.h
> +++ b/drivers/gpu/drm/xe/xe_device_types.h
> @@ -147,7 +147,7 @@ struct xe_tile {
>  		size_t size;
>  
>  		/** @regs: pointer to tile's MMIO space (starting with registers) */
> -		void *regs;
> +		void __iomem *regs;
>  	} mmio;
>  
>  	/**
> @@ -160,7 +160,7 @@ struct xe_tile {
>  		size_t size;
>  
>  		/** @regs: pointer to tile's additional MMIO-extension space */
> -		void *regs;
> +		void __iomem *regs;
>  	} mmio_ext;
>  
>  	/** @mem: memory management info for tile */
> @@ -306,7 +306,7 @@ struct xe_device {
>  		/** @size: size of MMIO space for device */
>  		size_t size;
>  		/** @regs: pointer to MMIO space for device */
> -		void *regs;
> +		void __iomem *regs;
>  	} mmio;
>  
>  	/** @mem: memory info for device */
> -- 
> 2.43.0
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation