linux-kernel - Re: [PATCH V2] PCI/portdrv: do not disable device on reboot/shutdown

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Message-ID: <8eacc568-af8c-a990-ee96-d13e669e8643@codeaurora.org>
Date:   Tue, 29 May 2018 19:41:43 -0700
From:   Sinan Kaya <okaya@...eaurora.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     linux-pci@...r.kernel.org, timur@...eaurora.org, ryan@...nie.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, stable@...r.kernel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Frederick Lawler <fred@...dlawl.com>,
        Dongdong Liu <liudongdong3@...wei.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        open list <linux-kernel@...r.kernel.org>,
        Don Brace <don.brace@...rosemi.com>,
        esc.storagedev@...rosemi.com, linux-scsi@...r.kernel.org
Subject: Re: [PATCH V2] PCI/portdrv: do not disable device on reboot/shutdown

Bjorn,

On 5/25/2018 3:10 PM, Bjorn Helgaas wrote:
> On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
>> On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
>>> That sounds like a reasonable idea, and it is definitely another can
>>> of worms.  I looked briefly at some of the .shutdown() cases:
>>
>> should we throw it into 4.18 and see what happens?
> 
> It wouldn't solve this particular problem because hpsa *does* have a
> .shutdown() method.  The problem is that it doesn't work -- it's
> supposed to stop DMA and interrupts but it apparently doesn't.
> 
> I think we need to fix hpsa first.
> 

I don't know if you followed my latest V3 patch but I found a way to put
these two together to reach to an, IMO, more acceptable solution.

Sinan

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.