From: "Maciej W. Rozycki" <macro@orcam.me.uk>
To: Bjorn Helgaas <bhelgaas@google.com>,
Mahesh J Salgaonkar <mahesh@linux.ibm.com>,
Oliver O'Halloran <oohall@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Saeed Mahameed <saeedm@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: "Alex Williamson" <alex.williamson@redhat.com>,
"Lukas Wunner" <lukas@wunner.de>,
"Mika Westerberg" <mika.westerberg@linux.intel.com>,
"Stefan Roese" <sr@denx.de>, "Jim Wilson" <wilson@tuliptree.org>,
"David Abdurachmanov" <david.abdurachmanov@gmail.com>,
"Pali Rohár" <pali@kernel.org>,
linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v8 6/7] net/mlx5: Rely on `link_active_reporting'
Date: Thu, 6 Apr 2023 01:21:27 +0100 (BST) [thread overview]
Message-ID: <alpine.DEB.2.21.2304060115270.13659@angie.orcam.me.uk> (raw)
In-Reply-To: <alpine.DEB.2.21.2304060100160.13659@angie.orcam.me.uk>
Use `link_active_reporting' to determine whether Data Link Layer Link
Active Reporting is available rather than re-retrieving the capability.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
---
NB this has been compile-tested only with PPC64LE and x86-64
configurations.
Changes from v7:
- Reorder from 5/7.
Changes from v6:
- Regenerate against 6.3-rc5.
New change in v6.
---
drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
linux-pcie-link-active-reporting-mlx5.diff
Index: linux-macro/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
===================================================================
--- linux-macro.orig/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ linux-macro/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -307,7 +307,6 @@ static int mlx5_pci_link_toggle(struct m
unsigned long timeout;
struct pci_dev *sdev;
int cap, err;
- u32 reg32;
/* Check that all functions under the pci bridge are PFs of
* this device otherwise fail this function.
@@ -346,11 +345,8 @@ static int mlx5_pci_link_toggle(struct m
return err;
/* Check link */
- err = pci_read_config_dword(bridge, cap + PCI_EXP_LNKCAP, ®32);
- if (err)
- return err;
- if (!(reg32 & PCI_EXP_LNKCAP_DLLLARC)) {
- mlx5_core_warn(dev, "No PCI link reporting capability (0x%08x)\n", reg32);
+ if (!bridge->link_active_reporting) {
+ mlx5_core_warn(dev, "No PCI link reporting capability\n");
msleep(1000);
goto restore;
}
next prev parent reply other threads:[~2023-04-06 0:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 0:20 [PATCH v8 0/7] pci: Work around ASMedia ASM2824 PCIe link training failures Maciej W. Rozycki
2023-04-06 0:21 ` [PATCH v8 1/7] PCI: pciehp: Rely on `link_active_reporting' Maciej W. Rozycki
2023-04-06 0:21 ` [PATCH v8 2/7] PCI: Export PCI link retrain timeout Maciej W. Rozycki
2023-05-04 22:21 ` Bjorn Helgaas
2023-04-06 0:21 ` [PATCH v8 3/7] PCI: Execute `quirk_enable_clear_retrain_link' earlier Maciej W. Rozycki
2023-04-06 0:21 ` [PATCH v8 4/7] PCI: Initialize `link_active_reporting' earlier Maciej W. Rozycki
2023-04-06 0:21 ` [PATCH v8 5/7] powerpc/eeh: Rely on `link_active_reporting' Maciej W. Rozycki
2023-04-06 0:21 ` Maciej W. Rozycki [this message]
2023-04-06 0:21 ` [PATCH v8 7/7] PCI: Work around PCIe link training failures Maciej W. Rozycki
2023-05-04 22:20 ` Bjorn Helgaas
2023-05-07 18:33 ` Maciej W. Rozycki
2023-05-14 20:54 ` Maciej W. Rozycki
2023-06-11 17:14 ` Maciej W. Rozycki
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=alpine.DEB.2.21.2304060115270.13659@angie.orcam.me.uk \
--to=macro@orcam.me.uk \
--cc=alex.williamson@redhat.com \
--cc=bhelgaas@google.com \
--cc=christophe.leroy@csgroup.eu \
--cc=davem@davemloft.net \
--cc=david.abdurachmanov@gmail.com \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=lukas@wunner.de \
--cc=mahesh@linux.ibm.com \
--cc=mika.westerberg@linux.intel.com \
--cc=mpe@ellerman.id.au \
--cc=netdev@vger.kernel.org \
--cc=npiggin@gmail.com \
--cc=oohall@gmail.com \
--cc=pabeni@redhat.com \
--cc=pali@kernel.org \
--cc=saeedm@nvidia.com \
--cc=sr@denx.de \
--cc=wilson@tuliptree.org \
/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).