From: Jeff Garzik <jgarzik@pobox.com>
To: Doug Ledford <dledford@redhat.com>
Cc: linux-scsi mailing list <linux-scsi@vger.kernel.org>
Subject: Re: [Patch] QLogic qla2x00 driver fixes
Date: Thu, 24 Feb 2005 23:28:39 -0500 [thread overview]
Message-ID: <421EA977.5050803@pobox.com> (raw)
In-Reply-To: <1109305293.27139.216.camel@compaq-rhel4.xsintricity.com>
Doug Ledford wrote:
> Don't use cmd->request->nr_hw_segments as it may not be initialized
> (SG_IO in particular bypasses anything that initializes this and just
> uses scsi_do_req to insert a scsi_request directly on the head of the
> queue) and a bogus value here can trip up the checks to make sure that
> the number of segments will fit in the queue ring buffer, resulting in
> commands that are never completed.
>
> Fix up several issues with PCI DMA mapping and failure to check return
> values on the mappings.
>
> Make the check for space in the ring buffer happen after the DMA mapping
> is done since any checks done before the mapping has taken place are
> bogus.
For future patches please include a signed-off-by line, per
http://linux.yyz.us/patch-format.html
Darned lawyers...
The patch itself looks OK to me.
Jeff
next prev parent reply other threads:[~2005-02-25 4:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-25 4:21 [Patch] QLogic qla2x00 driver fixes Doug Ledford
2005-02-25 4:28 ` Jeff Garzik [this message]
2005-02-25 6:46 ` Andrew Vasquez
2005-02-25 7:43 ` Douglas Gilbert
2005-02-25 7:57 ` Arjan van de Ven
2005-02-25 8:38 ` Jeff Garzik
2005-02-25 11:57 ` Doug Ledford
2005-02-25 17:02 ` Patrick Mansfield
2005-03-01 6:52 ` Doug Ledford
2005-02-25 17:09 ` Luben Tuikov
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