From: Michael Ellerman <mpe@ellerman.id.au>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, linuxppc-dev@lists.ozlabs.org
Cc: Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: Re: powerpc/eeh: Disable automatically blocked PCI config
Date: Thu, 20 Aug 2015 09:14:14 +1000 (AEST) [thread overview]
Message-ID: <20150819231415.0D8B6140783@ozlabs.org> (raw)
In-Reply-To: <1438212411-11368-1-git-send-email-gwshan@linux.vnet.ibm.com>
On Wed, 2015-29-07 at 23:26:51 UTC, Gavin Shan wrote:
> pcibios_set_pcie_reset_state() could be called to complete
> reset request when passing through PCI device, flag
> EEH_PE_ISOLATED is set before saving the PCI config sapce.
> On some Broadcom adapters, EEH_PE_CFG_BLOCKED is automatically
> set when the flag EEH_PE_ISOLATED is marked. It caused bogus
> data saved from the PCI config space, which will be restored
> to the PCI adapter after the reset. Eventually, the hardware
> can't work with corrupted data in PCI config space.
>
> The patch fixes the issue with eeh_pe_state_mark_no_cfg(), which
> doesn't set EEH_PE_CFG_BLOCKED when seeing EEH_PE_ISOLATED on the
> PE, in order to avoid the bogus data saved and restored to the PCI
> config space.
>
> Reported-by: Rajanikanth H. Adaveeshaiah <rajanikanth.ha@in.ibm.com>
> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/39bfd715b4837433a86c
cheers
prev parent reply other threads:[~2015-08-19 23:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-29 23:26 [PATCH] powerpc/eeh: Disable automatically blocked PCI config Gavin Shan
2015-08-19 23:14 ` Michael Ellerman [this message]
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