linux-kernel - [PATCH 1/2] xilinx systemace: Fix device name assignment for SystemACE (from "xs`" to "xsa").

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Message-Id: <4b5d6615a1338145a461a6d4e1c7d3e42d4f4522.1369312303.git.michal.simek@xilinx.com>
Date:	Thu, 23 May 2013 14:31:55 +0200
From:	Michal Simek <michal.simek@...inx.com>
To:	linux-kernel@...r.kernel.org
Cc:	Michal Simek <monstr@...str.eu>,
	Michal Simek <michal.simek@...inx.com>,
	Graeme Smecher <gsmecher@...eespeedlogic.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH 1/2] xilinx systemace: Fix device name assignment for SystemACE (from "xs`" to "xsa").

From: Graeme Smecher <gsmecher@...eespeedlogic.com>

This fixes a bug introduced in 5d10302f46d, where device trees that don't
provide the "port-number" attribute are mistakenly assigned the device "xs`".
The error check that's supposed to assign a default letter can't succeed,
since it tests an unsigned type against a negative return code.

Signed-off-by: Graeme Smecher <gsmecher@...eespeedlogic.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
Acked-by: Grant Likely <grant.likely@...retlab.ca>
---
 drivers/block/xsysace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index f8ef15f..3fd130f 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -1160,8 +1160,7 @@ static int ace_probe(struct platform_device *dev)
 	dev_dbg(&dev->dev, "ace_probe(%p)\n", dev);

 	/* device id and bus width */
-	of_property_read_u32(dev->dev.of_node, "port-number", &id);
-	if (id < 0)
+	if (of_property_read_u32(dev->dev.of_node, "port-number", &id))
 		id = 0;
 	if (of_find_property(dev->dev.of_node, "8-bit", NULL))
 		bus_width = ACE_BUS_WIDTH_8;
--
1.8.2.3


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