Thread (28 messages) 28 messages, 3 authors, 2018-01-12

[PATCH v2 2/7] PCI: aardvark: set PIO_ADDR_LS correctly in advk_pcie_rd_conf()

From: helgaas@kernel.org (Bjorn Helgaas)
Date: 2017-10-05 17:25:47
Also in: linux-pci, stable

On Thu, Sep 28, 2017 at 02:58:33PM +0200, Thomas Petazzoni wrote:
quoted hunk ↗ jump to hunk
From: Victor Gu <redacted>

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: <redacted>
Signed-off-by: Victor Gu <redacted>
Reviewed-by: Wilson Ding <redacted>
Reviewed-by: Nadav Haklai <redacted>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <redacted>
---
 drivers/pci/host/pci-aardvark.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c
index da2881ba7737..af7a9c4a61a4 100644
--- 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_bus *bus, u32 devfn,
 	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);
I think PCIE_BDF() is now unused and should be removed.
 	advk_writel(pcie, reg, PIO_ADDR_LS);
 	advk_writel(pcie, 0, PIO_ADDR_MS);
 
-- 
2.13.5


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