From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gavin Shan <shangw@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 03/10] powerpc/eeh: Check PCIe link after reset
Date: Tue, 25 Jun 2013 16:06:24 +1000 [thread overview]
Message-ID: <1372140384.3944.189.camel@pasglop> (raw)
In-Reply-To: <1372139717-14885-4-git-send-email-shangw@linux.vnet.ibm.com>
On Tue, 2013-06-25 at 13:55 +0800, Gavin Shan wrote:
> * don't touch the other command bits
> */
> - eeh_ops->read_config(dn, PCI_COMMAND, 4, &cmd);
> - if (edev->config_space[1] & PCI_COMMAND_PARITY)
> - cmd |= PCI_COMMAND_PARITY;
> - else
> - cmd &= ~PCI_COMMAND_PARITY;
> - if (edev->config_space[1] & PCI_COMMAND_SERR)
> - cmd |= PCI_COMMAND_SERR;
> - else
> - cmd &= ~PCI_COMMAND_SERR;
> - eeh_ops->write_config(dn, PCI_COMMAND, 4, cmd);
> + if (pdev) {
> + eeh_ops->write_config(dn, PCI_COMMAND, 4,
> + edev->config_space[1]);
> + } else {
That needs a much better comment. Why are you doing that instead
of what's below ? In fact there is more to restore in a bridge
right ? (windows etc...). Do you do that ? Should we just have a
different function to restore a device vs. a bridge ?
I also don't see a need to do thing differently between phyp and
powernv. Bridges inside partitions would suffer the same fate in
both cases.
Ben.
> + eeh_ops->read_config(dn, PCI_COMMAND, 4, &cmd);
> + if (edev->config_space[1] & PCI_COMMAND_PARITY)
> + cmd |= PCI_COMMAND_PARITY;
> + else
> + cmd &= ~PCI_COMMAND_PARITY;
> + if (edev->config_space[1] & PCI_COMMAND_SERR)
> + cmd |= PCI_COMMAND_SERR;
> + else
> + cmd &= ~PCI_COMMAND_SERR;
> + eeh_ops->write_config(dn, PCI_COMMAND, 4, cmd);
> + }
> +
next prev parent reply other threads:[~2013-06-25 6:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-25 5:55 [PATCH v1 00/10] powerpc/eeh: Remove eeh_mutex Gavin Shan
2013-06-25 5:55 ` [PATCH 01/10] " Gavin Shan
2013-06-25 5:55 ` [PATCH 02/10] powerpc/eeh: Don't collect PCI-CFG data on PHB Gavin Shan
2013-06-25 5:55 ` [PATCH 03/10] powerpc/eeh: Check PCIe link after reset Gavin Shan
2013-06-25 6:06 ` Benjamin Herrenschmidt [this message]
2013-06-25 7:47 ` Gavin Shan
2013-06-25 7:57 ` Benjamin Herrenschmidt
2013-06-25 8:04 ` Gavin Shan
2013-06-25 5:55 ` [PATCH 04/10] powerpc/eeh: Backends to get/set settings Gavin Shan
2013-06-25 6:07 ` Benjamin Herrenschmidt
2013-06-25 7:12 ` Gavin Shan
2013-06-25 5:55 ` [PATCH 05/10] powerpc/powernv: Support set/get EEH settings Gavin Shan
2013-06-25 5:55 ` [PATCH 06/10] powerpc/eeh: Support blocked IO access Gavin Shan
2013-06-25 5:55 ` [PATCH 07/10] powerpc/powernv: Block PCI-CFG access if necessary Gavin Shan
2013-06-25 5:55 ` [PATCH 08/10] powerpc/powernv: Hold PCI-CFG and I/O access Gavin Shan
2013-06-25 5:55 ` [PATCH 09/10] powerpc/eeh: Fix address catch for PowerNV Gavin Shan
2013-06-25 5:55 ` [PATCH 10/10] net/tg3: Avoid delay during MMIO access Gavin Shan
2013-06-25 6:15 ` Benjamin Herrenschmidt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1372140384.3944.189.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=shangw@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).