From: Douglas Gilbert <dougg@torque.net>
To: linux-kernel@vger.kernel.org
Subject: Re: linux 2.5 and ppa.c
Date: Tue, 15 Jan 2002 23:47:00 -0500 [thread overview]
Message-ID: <3C4505C4.37EBD193@torque.net> (raw)
John Weber <weber@nyc.rr.com> wrote:
> This is one of those drivers still broken due to
> the BIO changes (it still calls io_request_lock()).
>
> Unfortunately, I only know enough to
> s/io_request_lock/host->host_lock/g.
>
> I am afraid this requires a little more than this.
John,
The ppa_detect() must _not_ take the host_lock semaphore
as it is already taken by the mid level before it calls
ppa_detect(). [This will cause a lock up on an SMP
machine.]
The ppa_interrupt() should take the host_lock semaphore
before it calls scsi_done() (which calls up the scsi
driver stack).
The imm driver has been built by the same firm (Tim Waugh?)
and it looks correctly patched.
Doug Gilbert
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next reply other threads:[~2002-01-16 4:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-16 4:47 Douglas Gilbert [this message]
2002-01-16 7:12 ` linux 2.5 and ppa.c Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2002-01-16 4:14 John Weber
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