linux-kernel - Re: [patch] fix common mistake in polling loops

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Message-ID: <d120d5000607280543u6ca61a7epbb26ef98dafcae18@mail.gmail.com>
Date:	Fri, 28 Jul 2006 08:43:00 -0400
From:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
To:	"Zed 0xff" <zed.0xff@...il.com>
Cc:	kernel-janitors@...l.org, linux-kernel@...r.kernel.org
Subject: Re: [patch] fix common mistake in polling loops

On 7/28/06, Zed 0xff <zed.0xff@...il.com> wrote:
> @@ -955,11 +956,15 @@ static void psmouse_resync(void *p)
>  * repeat our attempts 5 times, otherwise we may be left out with disabled
>  * mouse.
>  */
> -       for (i = 0; i < 5; i++) {
> +       timeout = jiffies + msecs_to_jiffies(1000);
> +       for (;;) {
>                if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
>                        enabled = 1;
>                        break;
>                }
> +               if (time_after(timeout, jiffies)) {
> +                       break;
> +               }
>                msleep(200);
>        }
>

NAK. Have you read the comment above (that is partially visible in
your diff)? I do not really care about timeout here, I want my mouse
working.

-- 
Dmitry
-
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