linux-kernel - Re: [microblaze-uclinux] [PATCH] microblaze: iowrite upon timeout

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Message-ID: <1d3f23370904201818v1efb272dv55441d436311a19@mail.gmail.com>
Date:	Tue, 21 Apr 2009 11:18:59 +1000
From:	John Williams <john.williams@...alogix.com>
To:	microblaze-uclinux@...e.uq.edu.au
Cc:	monstr@...str.eu, lkml <linux-kernel@...r.kernel.org>
Subject: Re: [microblaze-uclinux] [PATCH] microblaze: iowrite upon timeout

On Fri, Apr 17, 2009 at 6:49 AM, Roel Kluin <roel.kluin@...il.com> wrote:
> retries reaches -1, so the iowrite occurrs upon timeout.
>
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>

Acked-by: John Williams <john.williams@...alogix.com>

(also applied to PetaLogix SVN)

Thanks,

John

> ---
> diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
> index 62cc789..4b0f0fd 100644
> --- a/arch/microblaze/kernel/early_printk.c
> +++ b/arch/microblaze/kernel/early_printk.c
> @@ -36,7 +36,7 @@ static void early_printk_putc(char c)
>
>        unsigned retries = 10000;
>        /* read status bit - 0x8 offset */
> -       while (retries-- && (in_be32(base_addr + 8) & (1 << 3)))
> +       while (--retries && (in_be32(base_addr + 8) & (1 << 3)))
>                ;
>
>        /* Only attempt the iowrite if we didn't timeout */
> ___________________________
> microblaze-uclinux mailing list
> microblaze-uclinux@...e.uq.edu.au
> Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
> Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
>
>



-- 
John Williams, PhD, B.Eng, B.IT
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com  p: +61-7-30090663  f: +61-7-30090663
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