linux-kernel - [PATCH] net: of/phy: fix build error when phylib is built as a module

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Date:	Fri, 11 May 2012 17:47:01 +0200
From:	Bjørn Mork <bjorn@...k.no>
To:	David Miller <davem@...emloft.net>
Cc:	paul.gortmaker@...driver.com, rdunlap@...otime.net,
	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, david.daney@...ium.com,
	Bjørn Mork <bjorn@...k.no>
Subject: [PATCH] net: of/phy: fix build error when phylib is built as a module

CONFIG_OF_MDIO is tristate and will be m if PHYLIB is m.  Use
IS_ENABLED macro to prevent build error:

 ERROR: "of_mdio_find_bus" [drivers/net/phy/mdio-mux.ko] undefined!

Reported-by: Randy Dunlap <rdunlap@...otime.net>
Cc: David Daney <david.daney@...ium.com>
Signed-off-by: Bjørn Mork <bjorn@...k.no>
---
I wonder if this could be as banal as this?  Not even build tested...

Should be wrapped into commit 25106022 if it works, to ensure
bisectability.



Bjørn

 drivers/net/phy/mdio_bus.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 83d5c9f..683ef1c 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -88,7 +88,7 @@ static struct class mdio_bus_class = {
 	.dev_release	= mdiobus_release,
 };
 
-#ifdef CONFIG_OF_MDIO
+#if IS_ENABLED(CONFIG_OF_MDIO)
 /* Helper function for of_mdio_find_bus */
 static int of_mdio_bus_match(struct device *dev, void *mdio_bus_np)
 {
-- 
1.7.10

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