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From: arjan@fenrus.demon.nl
To: hiren_mehta@agilent.com (MEHTA,HIREN A-SanJose,ex1)
Cc: linux-kernel@vger.kernel.org
Subject: Re: spin locks and timers in scsi hba driver
Date: Mon, 15 Oct 2001 23:10:40 +0100	[thread overview]
Message-ID: <E15tFwW-0004rw-00@fenrus.demon.nl> (raw)
In-Reply-To: <01A7DAF31F93D511AEE300D0B706ED9208E495@axcs13.cos.agilent.com>

In article <01A7DAF31F93D511AEE300D0B706ED9208E495@axcs13.cos.agilent.com> you wrote:
> Hi List,

> I want to make sure that my hba-driver timers do run
> when the uppar scsi-layer calls any of the error handler entry points
> and while I am still doing the error handling. As I know, scsi-layer
> calls spin_lock_irqsave(&io_request_lock, flags) before calling the
> error handlers and they call spin_unlock_irqrestore(&io_request_lock, flags)
> after returning from the error handlers. So, inside the error handlers,
> I call spin_unlock_irq(&io_request_lock); wait for the timers to run,
> and the again call spin_lock_irq(&io_request_lock). 

well interrupts are still disabled...
Could you give an URL to the source of your driver so that I and others can
see what you really are trying to do ?

Greetings,
   Arjan van de Ven

  reply	other threads:[~2001-10-15 22:10 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-10-15 22:01 MEHTA,HIREN (A-SanJose,ex1)
2001-10-15 22:10 ` arjan [this message]
2001-10-15 22:44 MEHTA,HIREN (A-SanJose,ex1)
2001-10-16  6:52 ` Arjan van de Ven

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