linux-kernel - Re: [RFT v3] eata: Convert eata driver as normal PCI and platform device drivers

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Date:	Wed, 23 Sep 2015 13:24:01 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Arthur Marsh <arthur.marsh@...ernode.on.net>,
	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Hannes Reinecke <hare@...e.de>,
	Ballabio Dario <dario.ballabio@....com>,
	Christoph Hellwig <hch@...radead.org>,
	Dario Ballabio <ballabio_dario@....com>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-scsi@...r.kernel.org, x86@...nel.org
Subject: Re: [RFT v3] eata: Convert eata driver as normal PCI and platform
 device drivers

On 2015/9/23 7:36, Arthur Marsh wrote:
> James Bottomley wrote on 23/09/15 08:15:
>> On Wed, 2015-09-23 at 07:55 +0930, Arthur Marsh wrote:
>> It looks to be some problem in shut down.  Can you simply remove and
>> re-insert the driver successfully?  If it's your root disk driver,
>> you'll have to do this from an initrd so as not to have root mounted
>> from the eata controller.
>>
>> If the remove and reinsert fails, it means we have a problem in the
>> driver shut down.  If not, it's likely something kexec related.
>>
>> James
> 
> OK, it looks like there was a problem with unloading the driver.
> 
> After un-mounting file systems on the disk attached to the SCSI
> controller using the eata driver I could do a:
> 
> modprobe -r eata
> 
> but received the output of the attached dmesg log.
> 
> Attempting to do
> 
> modprobe eata
> 
> after the previous modprobe -r eata resulted in a complete lock-up.
Hi Arthur,
	I have found the cause of the warning messages, it's caused
by a flaw in the conversion. But according to my understanding,
it isn't related to the kexec/kdump failure. Could you please help
to test the attached new version?
Thanks!
Gerry

> 
> Arthur.

View attachment "0001-eata-Convert-eata-driver-as-normal-PCI-and-platform-.patch" of type "text/x-patch" (19509 bytes)