From mboxrd@z Thu Jan  1 00:00:00 1970
From: Grant Likely <grant.likely@secretlab.ca>
Subject: Re: [PATCH] spi/pl022: use cpu_relax in the busy loop
Date: Thu, 19 May 2011 12:03:35 -0600
Message-ID: <20110519180334.GA5013@ponder.secretlab.ca>
References: <1305828085-25135-1-git-send-email-linus.walleij@stericsson.com>
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Cc: spi-devel-general@lists.sourceforge.net,
	Linus Walleij <linus.walleij@linaro.org>, Lee Jones <lee.jones@linaro.org>,
	linux-arm-kernel@lists.infradead.org
To: Linus Walleij <linus.walleij@stericsson.com>
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On Thu, May 19, 2011 at 08:01:25PM +0200, Linus Walleij wrote:
> This relaxes the cpu in the polling busy-wait loop.
> 
> Reported-by: Vitaly Wool <vitalywool@gmail.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Applied, thanks.

g.

> ---
>  drivers/spi/amba-pl022.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c
> index 18667de..8a2b88a 100644
> --- a/drivers/spi/amba-pl022.c
> +++ b/drivers/spi/amba-pl022.c
> @@ -1424,6 +1424,7 @@ static void do_polling_transfer(struct pl022 *pl022)
>  				message->state = STATE_ERROR;
>  				goto out;
>  			}
> +			cpu_relax();
>  		}
>  
>  		/* Update total byte transferred */
> -- 
> 1.7.3.2
>