linux-kernel - [PATCH 4/6] ARM: imx: fix ksz9021rn_phy

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Date:	Wed, 22 Aug 2012 17:13:08 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Russell King <rmk+kernel@....linux.org.uk>,
	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Artem Bityutskiy <dedekind1@...il.com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH 4/6] ARM: imx: fix ksz9021rn_phy_fixup

The ksz9021rn_phy_fixup and mx6q_sabrelite functions try to
set up an ethernet phy if they can. They do check whether
phylib is enabled, but unfortunately the functions can only
be called from platform code if phylib is builtin, not
if it is a module

Without this patch, building with a modular phylib results in:

arch/arm/mach-imx/mach-imx6q.c: In function 'imx6q_sabrelite_init':
arch/arm/mach-imx/mach-imx6q.c:120:5: error: 'ksz9021rn_phy_fixup' undeclared (first use in this function)
arch/arm/mach-imx/mach-imx6q.c:120:5: note: each undeclared identifier is reported only once for each function it appears in

The bug was originally reported by Artem Bityutskiy but only
partially fixed in ef441806 "ARM: imx6q: register phy fixup only when
CONFIG_PHYLIB is enabled".

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Cc: Artem Bityutskiy <dedekind1@...il.com>
Cc: Shawn Guo <shawn.guo@...aro.org>
Cc: Sascha Hauer <s.hauer@...gutronix.de>
---
 arch/arm/mach-imx/mach-imx6q.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 5ec0608..045b3f6 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -71,7 +71,7 @@ soft:
 /* For imx6q sabrelite board: set KSZ9021RN RGMII pad skew */
 static int ksz9021rn_phy_fixup(struct phy_device *phydev)
 {
-	if (IS_ENABLED(CONFIG_PHYLIB)) {
+	if (IS_BUILTIN(CONFIG_PHYLIB)) {
 		/* min rx data delay */
 		phy_write(phydev, 0x0b, 0x8105);
 		phy_write(phydev, 0x0c, 0x0000);
@@ -112,7 +112,7 @@ put_clk:
 
 static void __init imx6q_sabrelite_init(void)
 {
-	if (IS_ENABLED(CONFIG_PHYLIB))
+	if (IS_BUILTIN(CONFIG_PHYLIB))
 		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
 				ksz9021rn_phy_fixup);
 	imx6q_sabrelite_cko1_setup();
-- 
1.7.10

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