linux-kernel - [PATCH 3/4] of/platform: fix device naming for non-translatable addresses

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Date:	Wed,  7 May 2014 16:48:17 -0500
From:	Rob Herring <robherring2@...il.com>
To:	Grant Likely <grant.likely@...aro.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:	"Ivan T. Ivanov" <iivanov@...sol.com>,
	Josh Cartwright <joshc@...eaurora.org>,
	Courtney Cavin <courtney.cavin@...ymobile.com>,
	Bjorn Andersson <bjorn@...o.se>,
	Frank Rowand <frowand.list@...il.com>,
	Rob Herring <robh@...nel.org>
Subject: [PATCH 3/4] of/platform: fix device naming for non-translatable addresses

From: Rob Herring <robh@...nel.org>

Using non-translatable addresses in platform device names is wrong
because they may not be globally unique. Just use the default naming with
a global index if the address cannot be translated instead.

of_can_translate_address has the same checks as of_translate_address, so
we can remove it here as well.

Reported-by: "Ivan T. Ivanov" <iivanov@...sol.com>
Cc: Josh Cartwright <joshc@...eaurora.org>
Cc: Courtney Cavin <courtney.cavin@...ymobile.com>
Cc: Bjorn Andersson <bjorn@...o.se>
Cc: Frank Rowand <frowand.list@...il.com>
Cc: Grant Likely <grant.likely@...aro.org>
Signed-off-by: Rob Herring <robh@...nel.org>
---
 drivers/of/platform.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 622aeb3..d827ceb 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -78,7 +78,6 @@ void of_device_make_bus_id(struct device *dev)
 	struct device_node *node = dev->of_node;
 	const __be32 *reg;
 	u64 addr;
-	const __be32 *addrp;
 	int magic;
 
 #ifdef CONFIG_PPC_DCR
@@ -106,15 +105,7 @@ void of_device_make_bus_id(struct device *dev)
 	 */
 	reg = of_get_property(node, "reg", NULL);
 	if (reg) {
-		if (of_can_translate_address(node)) {
-			addr = of_translate_address(node, reg);
-		} else {
-			addrp = of_get_address(node, 0, NULL, NULL);
-			if (addrp)
-				addr = of_read_number(addrp, 1);
-			else
-				addr = OF_BAD_ADDR;
-		}
+		addr = of_translate_address(node, reg);
 		if (addr != OF_BAD_ADDR) {
 			dev_set_name(dev, "%llx.%s",
 				     (unsigned long long)addr, node->name);
-- 
1.9.1

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