linux-kernel - Re: [PATCH] Fix an infinite retry-loop

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Message-ID: <CAHp75VdrZrX7CyqcJUM5ZB8+yS4s=PR5xeGVvY+jgJp_wdxqGQ@mail.gmail.com>
Date:	Wed, 7 Jan 2015 20:39:08 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Giel van Schijndel <me@...tis.eu>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jitendra Kalsaria <jitendra.kalsaria@...gic.com>,
	Ron Mercer <ron.mercer@...gic.com>,
	"supporter:QLOGIC QLA3XXX NE..." <linux-driver@...gic.com>,
	"open list:QLOGIC QLA3XXX NE..." <netdev@...r.kernel.org>
Subject: Re: [PATCH] Fix an infinite retry-loop

On Sun, Jan 4, 2015 at 8:04 PM, Giel van Schijndel <me@...tis.eu> wrote:
> This was clearly intended as a retry-10-times loop, but due to the
> absence of code incrementing the loop-counter it was practically a
> retry-forever loop.
>
> Rewritten it as a for-loop as well to make the loop-counter increment
> (as well as its potential absence) easier to spot.

It's already in upstream in better form.

> ---
>  drivers/net/ethernet/qlogic/qla3xxx.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c
> index c2f09af..35a26c9 100644
> --- a/drivers/net/ethernet/qlogic/qla3xxx.c
> +++ b/drivers/net/ethernet/qlogic/qla3xxx.c
> @@ -144,9 +144,9 @@ static int ql_sem_lock(struct ql3_adapter *qdev, u32 sem_mask, u32 sem_bits)
>   */
>  static int ql_wait_for_drvr_lock(struct ql3_adapter *qdev)
>  {
> -       int i = 0;
> +       int i;
>
> -       while (i < 10) {
> +       for (i = 0; i < 10; ++i) {
>                 if (i)
>                         ssleep(1);
>
> --
> 2.1.4
>
> --
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-- 
With Best Regards,
Andy Shevchenko
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