linux-kernel - [PATCH 3.5 65/71] of: Fix address decoding on Bimini and js2x machines

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1396272197-13394-66-git-send-email-luis.henriques@canonical.com>
Date:	Mon, 31 Mar 2014 14:23:11 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Grant Likely <grant.likely@...aro.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.5 65/71] of: Fix address decoding on Bimini and js2x machines

3.5.7.33 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Benjamin Herrenschmidt <benh@...nel.crashing.org>

commit 6dd18e4684f3d188277bbbc27545248487472108 upstream.

 Commit:

  e38c0a1fbc5803cbacdaac0557c70ac8ca5152e7
  of/address: Handle #address-cells > 2 specially

broke real time clock access on Bimini, js2x, and similar powerpc
machines using the "maple" platform. That code was indirectly relying
on the old (broken) behaviour of the translation for the hypertransport
to ISA bridge.

This fixes it by treating hypertransport as a PCI bus

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Acked-by: Rob Herring <rob.herring@...xeda.com>
Signed-off-by: Grant Likely <grant.likely@...aro.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/of/address.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 7e262a6..8bd5127 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -98,8 +98,12 @@ static unsigned int of_bus_default_get_flags(const __be32 *addr)
 
 static int of_bus_pci_match(struct device_node *np)
 {
-	/* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */
-	return !strcmp(np->type, "pci") || !strcmp(np->type, "vci");
+	/*
+	 * "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");
 }
 
 static void of_bus_pci_count_cells(struct device_node *np,
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/