mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-28 22:57:37 +00:00
51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
From 2a4cd9ade005d2dec2b27a90daea952f225384a5 Mon Sep 17 00:00:00 2001
|
|
From: Victor Gu <xigu@marvell.com>
|
|
Date: Fri, 8 Sep 2017 11:53:42 +0200
|
|
Subject: [PATCH 2/7] PCI: aardvark: fix logic in PCI configuration read/write
|
|
functions
|
|
|
|
The PCI configuration space read/write functions were special casing
|
|
the situation where PCI_SLOT(devfn) != 0, and returned
|
|
PCIBIOS_DEVICE_NOT_FOUND in this case.
|
|
|
|
However, will this is what is intended for the root bus, it is not
|
|
intended for the child busses, as it prevents discovering devices with
|
|
PCI_SLOT(x) != 0. Therefore, we return PCIBIOS_DEVICE_NOT_FOUND only
|
|
if we're on the root bus.
|
|
|
|
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 | 4 ++--
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c
|
|
index 26ed0c08f209..e591df338bcc 100644
|
|
--- a/drivers/pci/host/pci-aardvark.c
|
|
+++ b/drivers/pci/host/pci-aardvark.c
|
|
@@ -440,7 +440,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
|
|
u32 reg;
|
|
int ret;
|
|
|
|
- if (PCI_SLOT(devfn) != 0) {
|
|
+ if ((bus->number == pcie->root_bus_nr) && (PCI_SLOT(devfn) != 0)) {
|
|
*val = 0xffffffff;
|
|
return PCIBIOS_DEVICE_NOT_FOUND;
|
|
}
|
|
@@ -494,7 +494,7 @@ static int advk_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
|
|
int offset;
|
|
int ret;
|
|
|
|
- if (PCI_SLOT(devfn) != 0)
|
|
+ if ((bus->number == pcie->root_bus_nr) && (PCI_SLOT(devfn) != 0))
|
|
return PCIBIOS_DEVICE_NOT_FOUND;
|
|
|
|
if (where % size)
|
|
--
|
|
2.14.2
|
|
|