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[3.11.y.z,extended,stable] Patch "of: fix PCI bus match for PCIe slots" has been added to staging queue

Message ID 1392985465-5034-1-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques Feb. 21, 2014, 12:24 p.m. UTC 
This is a note to let you know that I have just added a patch titled

    of: fix PCI bus match for PCIe slots

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

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From feed2ff1df302c48e79a3915d949fb376a668c13 Mon Sep 17 00:00:00 2001
From: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Date: Mon, 3 Feb 2014 13:31:03 -0200
Subject: of: fix PCI bus match for PCIe slots

commit 14e2abb732e485ee57d9d5b2cb8884652238e5c1 upstream.

On IBM pseries systems the device_type device-tree property of a PCIe
bridge contains the string "pciex". The of_bus_pci_match() function was
looking only for "pci" on this property, so in such cases the bus
matching code was falling back to the default bus, causing problems on
functions that should be using "assigned-addresses" for region address
translation. This patch fixes the problem by also looking for "pciex" on
the PCI bus match function.

v2: added comment

Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 drivers/of/address.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--
1.9.0
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Patch

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 3c4b2af..503b4e4 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -99,11 +99,12 @@  static unsigned int of_bus_default_get_flags(const __be32 *addr)
 static int of_bus_pci_match(struct device_node *np)
 {
 	/*
+ 	 * "pciex" is PCI Express
 	 * "vci" is for the /chaos bridge on 1st-gen PCI powermacs
 	 * "ht" is hypertransport
 	 */
-	return !strcmp(np->type, "pci") || !strcmp(np->type, "vci") ||
-		!strcmp(np->type, "ht");
+	return !strcmp(np->type, "pci") || !strcmp(np->type, "pciex") ||
+		!strcmp(np->type, "vci") || !strcmp(np->type, "ht");
 }

 static void of_bus_pci_count_cells(struct device_node *np,