* 949e9b827eb4736d96df520c67d07a54c64e99b8 powerpc/eeh: eeh_pci_enable(): fix checking of post-request state
@ 2016-08-23 3:45 Andrew Donnellan
2016-08-30 8:47 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Andrew Donnellan @ 2016-08-23 3:45 UTC (permalink / raw)
To: stable
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.
Regards
--
Andrew Donnellan OzLabs, ADL Canberra
andrew.donnellan@au1.ibm.com IBM Australia Limited
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 949e9b827eb4736d96df520c67d07a54c64e99b8 powerpc/eeh: eeh_pci_enable(): fix checking of post-request state
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
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2016-08-30 8:47 UTC (permalink / raw)
To: Andrew Donnellan; +Cc: stable
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
^ permalink raw reply [flat|nested] 2+ messages in thread
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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
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