linux-kernel - Re: [PATCH 6/7] drm/tilcdc: clean up ifdef hacks around iowrite64

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Message-ID: <504da99a-838c-48ec-c5b2-6b611d587a10@ti.com>
Date:   Mon, 26 Jun 2017 11:55:03 +0300
From:   Jyri Sarha <jsarha@...com>
To:     Logan Gunthorpe <logang@...tatee.com>,
        <linux-kernel@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-ntb@...glegroups.com>, <linux-alpha@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-crypto@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>
CC:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stephen Bates <sbates@...thlin.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>
Subject: Re: [PATCH 6/7] drm/tilcdc: clean up ifdef hacks around iowrite64

On 06/22/17 19:48, Logan Gunthorpe wrote:
> Now that we can expect iowrite64 to always exist the hack is no longer
> necessary so we just call iowrite64 directly.
> 
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
> Cc: Jyri Sarha <jsarha@...com>
> Cc: Tomi Valkeinen <tomi.valkeinen@...com>
> Cc: David Airlie <airlied@...ux.ie>

Acked-by: Jyri Sarha <jsarha@...com>

And thanks!

> ---
>  drivers/gpu/drm/tilcdc/tilcdc_regs.h | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
> index e9ce725698a9..0b901405f30a 100644
> --- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h
> +++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
> @@ -133,13 +133,7 @@ static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
>  	struct tilcdc_drm_private *priv = dev->dev_private;
>  	void __iomem *addr = priv->mmio + reg;
>  
> -#ifdef iowrite64
>  	iowrite64(data, addr);
> -#else
> -	__iowmb();
> -	/* This compiles to strd (=64-bit write) on ARM7 */
> -	*(u64 __force *)addr = __cpu_to_le64(data);
> -#endif
>  }
>  
>  static inline u32 tilcdc_read(struct drm_device *dev, u32 reg)
>