From: Greg KH <greg@kroah.com>
To: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Cc: stable@vger.kernel.org
Subject: Re: 949e9b827eb4736d96df520c67d07a54c64e99b8 powerpc/eeh: eeh_pci_enable(): fix checking of post-request state
Date: Tue, 30 Aug 2016 10:47:05 +0200 [thread overview]
Message-ID: <20160830084705.GA4104@kroah.com> (raw)
In-Reply-To: <f8429639-47a4-c8b3-e001-46104235308a@au1.ibm.com>
On Tue, Aug 23, 2016 at 01:45:41PM +1000, Andrew Donnellan wrote:
> Dear stable team
>
> Could you please cherry-pick the following:
>
> Commit: 949e9b827eb4736d96df520c67d07a54c64e99b8
>
> Title: powerpc/eeh: eeh_pci_enable(): fix checking of post-request state
>
> Versions: 3.18, 4.1, 4.4 (doesn't apply cleanly on <= 3.16)
>
> Justification: Without this patch, in some circumstances EEH incorrectly
> attempts to continue PCI recovery believing that MMIO and DMA have been
> unfrozen, when they haven't, and in turn calls back into the device driver
> even though the device is not accessible. This bug has been observed several
> times on IBM CAPI/cxl test systems.
Applied to 4.4-stable, thanks.
greg k-h
prev parent reply other threads:[~2016-08-30 8:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 3:45 949e9b827eb4736d96df520c67d07a54c64e99b8 powerpc/eeh: eeh_pci_enable(): fix checking of post-request state Andrew Donnellan
2016-08-30 8:47 ` Greg KH [this message]
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