linux-kernel - Re: [PATCH V2 1/7] PCI: protect restore with device lock to be consistent

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Message-ID: <20171129173621.GB27742@infradead.org>
Date:   Wed, 29 Nov 2017 09:36:21 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     linux-pci@...r.kernel.org, timur@...eaurora.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 1/7] PCI: protect restore with device lock to be
 consistent

On Mon, Nov 27, 2017 at 01:20:22AM -0500, Sinan Kaya wrote:
> Commit b014e96d1abb ("PCI: Protect pci_error_handlers->reset_notify() usage
> with device_lock()") added protection around pci_dev_restore() function so
> that device specific remove callback does not cause a race condition
> against hotplug.
> 
> pci_dev_lock() usage has been forgotten in two different places in the
> code. Adding locks for pci_slot_restore() and moving pci_dev_restore()
> inside the locks for pci_try_reset_function().
> 
> Signed-off-by: Sinan Kaya <okaya@...eaurora.org>

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>