linux-kernel - Re: [PATCH v2 26/28] drm/i2c: tda998x: code optimization

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Date:	Sat, 11 Jan 2014 18:55:09 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Jean-Francois Moine <moinejf@...e.fr>
Cc:	dri-devel@...ts.freedesktop.org, Rob Clark <robdclark@...il.com>,
	Dave Airlie <airlied@...il.com>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 26/28] drm/i2c: tda998x: code optimization

On Thu, Jan 09, 2014 at 12:07:25PM +0100, Jean-Francois Moine wrote:
> This patch reduces the number of I2C exchanges by setting many bits in
> one write and removing a useless write.
> 
> Signed-off-by: Jean-Francois Moine <moinejf@...e.fr>
> ---
>  drivers/gpu/drm/i2c/tda998x_drv.c   | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
> index 6b4f6d2..d3b3f3a 100644
> --- a/drivers/gpu/drm/i2c/tda998x_drv.c
> +++ b/drivers/gpu/drm/i2c/tda998x_drv.c
> @@ -751,10 +751,10 @@ tda998x_configure_audio(struct tda998x_priv *priv,
>  	}
>  
>  	reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
> -	reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT);
> +	reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT |

This patch clearly hasn't even been build tested, so I doubt there's
much point reviewing this or the following patches.  From a quick scan
of the following patches, this never got fixed so the following patches
can't have been build tested either.

Thanks.

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