From: Andi Kleen <ak@muc.de>
To: Dave Jones <davej@redhat.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: tickle nmi watchdog whilst doing serial writes.
Date: Sun, 15 May 2005 13:38:02 +0200 [thread overview]
Message-ID: <m1u0l4afdx.fsf@muc.de> (raw)
In-Reply-To: <20050513184806.GA24166@redhat.com> (Dave Jones's message of "Fri, 13 May 2005 14:48:06 -0400")
Dave Jones <davej@redhat.com> writes:
>
> #include <asm/io.h>
> #include <asm/irq.h>
> @@ -2099,8 +2100,10 @@ static inline void wait_for_xmitr(struct
> if (up->port.flags & UPF_CONS_FLOW) {
> tmout = 1000000;
> while (--tmout &&
> - ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
> + ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0)) {
> udelay(1);
> + touch_nmi_watchdog();
Note that touch_nmi_watchdog is not exported on i386 - Linus vetoed
that some time ago. The real fix of course is to use schedule_timeout(),
but that might break printk() with interrupts off :/
-Andi
next prev parent reply other threads:[~2005-05-15 11:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-13 18:48 tickle nmi watchdog whilst doing serial writes Dave Jones
2005-05-13 19:14 ` Arjan van de Ven
2005-05-13 19:23 ` Dave Jones
2005-05-13 19:37 ` Russell King
2005-05-14 6:43 ` Andrew Morton
2005-05-14 6:57 ` Dave Jones
2005-05-14 7:07 ` Andrew Morton
2005-05-14 10:31 ` Ed Tomlinson
2005-05-14 10:53 ` Alexander Nyberg
2005-05-15 11:40 ` Andi Kleen
2005-05-14 10:53 ` Ed Tomlinson
2005-05-15 11:38 ` Andi Kleen [this message]
2005-05-15 12:07 ` Russell King
2005-05-15 12:20 ` Andi Kleen
2005-05-15 14:01 ` Russell King
2005-05-15 14:03 ` Andi Kleen
2005-05-19 0:24 ` George Anzinger
2005-05-19 7:33 ` Russell King
2005-05-23 20:20 ` Bill Davidsen
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