linux-kernel - Re: [PATCH v4 13/15] drm/bridge: tc358767: Simplify tc_aux_wait

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Date:   Fri, 7 Jun 2019 08:21:11 +0200
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     Andrey Smirnov <andrew.smirnov@...il.com>,
        dri-devel@...ts.freedesktop.org
Cc:     Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Andrey Gusakov <andrey.gusakov@...entembedded.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Cory Tusar <cory.tusar@....aero>,
        Chris Healy <cphealy@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 13/15] drm/bridge: tc358767: Simplify
 tc_aux_wait_busy()

On 07.06.2019 06:45, Andrey Smirnov wrote:
> We never pass anything but 100 as timeout_ms to tc_aux_wait_busy(), so
> we may as well hardcode that value and simplify function's signature.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>

 --
Regards
Andrzej
> Cc: Andrzej Hajda <a.hajda@...sung.com>
> Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
> Cc: Tomi Valkeinen <tomi.valkeinen@...com>
> Cc: Andrey Gusakov <andrey.gusakov@...entembedded.com>
> Cc: Philipp Zabel <p.zabel@...gutronix.de>
> Cc: Cory Tusar <cory.tusar@....aero>
> Cc: Chris Healy <cphealy@...il.com>
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Cc: dri-devel@...ts.freedesktop.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  drivers/gpu/drm/bridge/tc358767.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
> index c994c72eb330..e747f10021e3 100644
> --- a/drivers/gpu/drm/bridge/tc358767.c
> +++ b/drivers/gpu/drm/bridge/tc358767.c
> @@ -294,10 +294,9 @@ static inline int tc_poll_timeout(struct tc_data *tc, unsigned int addr,
>  					sleep_us, timeout_us);
>  }
>  
> -static int tc_aux_wait_busy(struct tc_data *tc, unsigned int timeout_ms)
> +static int tc_aux_wait_busy(struct tc_data *tc)
>  {
> -	return tc_poll_timeout(tc, DP0_AUXSTATUS, AUX_BUSY, 0,
> -			       1000, 1000 * timeout_ms);
> +	return tc_poll_timeout(tc, DP0_AUXSTATUS, AUX_BUSY, 0, 1000, 100000);
>  }
>  
>  static int tc_aux_write_data(struct tc_data *tc, const void *data,
> @@ -350,7 +349,7 @@ static ssize_t tc_aux_transfer(struct drm_dp_aux *aux,
>  	u32 auxstatus;
>  	int ret;
>  
> -	ret = tc_aux_wait_busy(tc, 100);
> +	ret = tc_aux_wait_busy(tc);
>  	if (ret)
>  		return ret;
>  
> @@ -377,7 +376,7 @@ static ssize_t tc_aux_transfer(struct drm_dp_aux *aux,
>  	if (ret)
>  		return ret;
>  
> -	ret = tc_aux_wait_busy(tc, 100);
> +	ret = tc_aux_wait_busy(tc);
>  	if (ret)
>  		return ret;
>