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From patchwork Thu Sep 28 12:58:33 2017
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2,
2/7] PCI: aardvark: set PIO_ADDR_LS correctly in advk_pcie_rd_conf()
X-Patchwork-Submitter: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
X-Patchwork-Id: 819589
Message-Id: <20170928125838.11887-3-thomas.petazzoni@free-electrons.com>
To: Bjorn Helgaas <bhelgaas@google.com>, linux-pci@vger.kernel.org
Cc: Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>, Gregory Clement
<gregory.clement@free-electrons.com>,
Nadav Haklai <nadavh@marvell.com>, Hanna Hawa <hannah@marvell.com>,
Yehuda Yitschak <yehuday@marvell.com>,
linux-arm-kernel@lists.infradead.org, Antoine Tenart
<antoine.tenart@free-electrons.com>, =?utf-8?q?Miqu=C3=A8l_Raynal?=
<miquel.raynal@free-electrons.com>, Victor Gu <xigu@marvell.com>,
stable@vger.kernel.org, Thomas Petazzoni
<thomas.petazzoni@free-electrons.com>
Date: Thu, 28 Sep 2017 14:58:33 +0200
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
List-Id: <linux-pci.vger.kernel.org>
From: Victor Gu <xigu@marvell.com>
When setting the PIO_ADDR_LS register during a configuration read, we
were properly passing the device number, function number and register
number, but not the bus number, causing issues when reading the
configuration of PCIe devices.
Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Victor Gu <xigu@marvell.com>
Reviewed-by: Wilson Ding <dingwei@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
drivers/pci/host/pci-aardvark.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -459,7 +459,7 @@ static int advk_pcie_rd_conf(struct pci_
advk_writel(pcie, reg, PIO_CTRL);
/* Program the address registers */
- reg = PCIE_BDF(devfn) | PCIE_CONF_REG(where);
+ reg = PCIE_CONF_ADDR(bus->number, devfn, where);
advk_writel(pcie, reg, PIO_ADDR_LS);
advk_writel(pcie, 0, PIO_ADDR_MS);
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