From: Willy Tarreau <willy@w.ods.org>
To: Jim Paris <jim@jtan.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Re: time() glitch on 2.4.18: solved
Date: Tue, 5 Nov 2002 18:14:06 +0100 [thread overview]
Message-ID: <20021105171406.GC879@alpha.home.local> (raw)
In-Reply-To: <20021105113020.A5210@neurosis.mit.edu>
BTW, why not trying to resync, with something like :
if (count >= LATCH)
count = (count >> 8) | inb(0x40) << 8;
Cheers,
Willy
> count = inb_p(0x40); /* read the latched count */
> count |= inb(0x40) << 8;
> +
> + /* Any unpaired read will cause the above to swap MSB/LSB
> + forever. Try to detect this and reset the counter. */
> + if (count > LATCH) {
> + outb_p(0x34, 0x43);
> + outb_p(LATCH & 0xff, 0x40);
> + outb(LATCH >> 8, 0x40);
> + count = LATCH - 1;
> + }
> +
> spin_unlock(&i8253_lock);
>
> count = ((LATCH-1) - count) * TICK_SIZE;
> -
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next prev parent reply other threads:[~2002-11-05 17:09 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-02 6:37 time() glitch on 2.4.18 at 177 days uptime? Jim Paris
2002-11-03 19:32 ` time() glitch on 2.4.18: solved Jim Paris
2002-11-03 20:30 ` Alan Cox
2002-11-05 16:30 ` [PATCH] " Jim Paris
2002-11-05 16:54 ` george anzinger
2002-11-05 17:10 ` Willy Tarreau
2002-11-05 18:16 ` Alan Cox
2002-11-05 18:02 ` Jim Paris
2002-11-05 18:37 ` Alan Cox
2002-11-05 18:20 ` Willy Tarreau
2002-11-05 18:50 ` Jim Paris
2002-11-05 17:14 ` Willy Tarreau [this message]
2002-11-05 17:42 ` Jim Paris
2002-11-05 18:57 ` Richard B. Johnson
2002-11-05 19:08 ` Willy Tarreau
2002-11-05 19:29 ` Richard B. Johnson
2002-11-05 20:07 ` Alan Cox
2002-11-05 20:14 ` Willy Tarreau
2002-11-05 20:38 ` Richard B. Johnson
2002-11-05 23:15 ` Willy Tarreau
2002-11-06 12:47 ` Richard B. Johnson
2002-11-06 13:25 ` Alan Cox
2002-11-06 23:21 ` Jim Paris
2002-11-05 20:23 ` Richard B. Johnson
2002-11-05 20:57 ` Alan Cox
2002-11-05 20:41 ` Richard B. Johnson
2002-11-06 15:09 ` Christer Weinigel
2002-11-06 15:49 ` Richard B. Johnson
2002-11-05 20:06 ` Alan Cox
2002-11-05 17:32 ` Alan Cox
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