linux-kernel - Re: [PATCH v0 2/4] i2c: bcm-kona: Use complete() instead of complete

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Date:	Wed, 3 Aug 2016 09:38:11 -0700
From:	Ray Jui <ray.jui@...adcom.com>
To:	Daniel Wagner <wagi@...om.org>, Wolfram Sang <wsa@...-dreams.de>
Cc:	Beniamino Galvani <b.galvani@...il.com>,
	Kamal Dasu <kdasu.kdev@...il.com>, Ray Jui <rjui@...adcom.com>,
	Tim Kryger <tim.kryger@...aro.org>,
	linux-amlogic@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
	bcm-kernel-feedback-list@...adcom.com,
	linux-kernel@...r.kernel.org,
	Daniel Wagner <daniel.wagner@...-carit.de>
Subject: Re: [PATCH v0 2/4] i2c: bcm-kona: Use complete() instead of
 complete_all()

Hi Daniel,

On 8/3/2016 5:03 AM, Daniel Wagner wrote:
> From: Daniel Wagner <daniel.wagner@...-carit.de>
>
> There is only one waiter for the completion, therefore there
> is no need to use complete_all(). Let's make that clear by
> using complete() instead of complete_all().
>
> The usage pattern of the completion is:
>
> bcm_kona_send_i2c_cmd()
>   reinit_completion()
>   ...
>   bcm_kona_i2c_send_cmd_to_ctrl()
>   ...
>   wait_for_completion_timeout()
>
> Signed-off-by: Daniel Wagner <daniel.wagner@...-carit.de>
> ---
>  drivers/i2c/busses/i2c-bcm-kona.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/i2c/busses/i2c-bcm-kona.c b/drivers/i2c/busses/i2c-bcm-kona.c
> index ac9f476..f987432 100644
> --- a/drivers/i2c/busses/i2c-bcm-kona.c
> +++ b/drivers/i2c/busses/i2c-bcm-kona.c
> @@ -229,7 +229,7 @@ static irqreturn_t bcm_kona_i2c_isr(int irq, void *devid)
>  		       dev->base + TXFCR_OFFSET);
>
>  	writel(status & ~ISR_RESERVED_MASK, dev->base + ISR_OFFSET);
> -	complete_all(&dev->done);
> +	complete(&dev->done);
>
>  	return IRQ_HANDLED;
>  }
>

This change looks good me! Thanks.

Acked-by: Ray Jui <ray.jui@...adcom.com>