linux-kernel - undefined reference to fixed_phy_add, from of_add_fixed

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Message-Id: <200802271158.00453.olaf@aepfle.de>
Date:	Wed, 27 Feb 2008 11:58:00 +0100
From:	Olaf Hering <olaf@...fle.de>
To:	linux-kernel@...r.kernel.org
Subject: undefined reference to fixed_phy_add, from of_add_fixed_phys

Hello,

can anyone explain why linking fails?
I dont see whats so special about fixed_phy_add(). 

olaf@...gonberry:/dev/shm/R/linux-2.6.25-rc3> time env LC_ALL=C make -kj8 O=../O-25 vmlinux
  GEN     /dev/shm/R/O-25/Makefile
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  Using /dev/shm/R/linux-2.6.25-rc3 as source for kernel
  CALL    /dev/shm/R/linux-2.6.25-rc3/scripts/checksyscalls.sh
  CHK     include/linux/compile.h
  CALL    /dev/shm/R/linux-2.6.25-rc3/arch/powerpc/kernel/systbl_chk.sh
  CC      arch/powerpc/sysdev/fsl_soc.o
/dev/shm/R/linux-2.6.25-rc3/arch/powerpc/sysdev/fsl_soc.c:153:2: warning: #warning fixed_phy_add
/dev/shm/R/linux-2.6.25-rc3/arch/powerpc/sysdev/fsl_soc.c:153:2: warning: #warning fixed_phy_add
  LD      arch/powerpc/sysdev/built-in.o
  CC      drivers/net/phy/fixed.o
/dev/shm/R/linux-2.6.25-rc3/drivers/net/phy/fixed.c:173:2: warning: #warning fixed_phy_add
/dev/shm/R/linux-2.6.25-rc3/drivers/net/phy/fixed.c:173:2: warning: #warning fixed_phy_add
  LD      drivers/net/phy/built-in.o
  LD      vmlinux.o
  MODPOST vmlinux.o
WARNING: modpost: Found 11 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
arch/powerpc/sysdev/built-in.o: In function `of_add_fixed_phys':
(.text+0x124c): undefined reference to `fixed_phy_add'
make[1]: *** [.tmp_vmlinux1] Error 1
make[1]: Target `vmlinux' not remade because of errors.
make: *** [sub-make] Error 2
make: Target `vmlinux' not remade because of errors.

real    0m15.343s
user    0m6.341s
sys     0m3.135s

olaf@...gonberry:/dev/shm/R/linux-2.6.25-rc3> quilt diff
Index: linux-2.6.25-rc3/arch/powerpc/sysdev/fsl_soc.c
===================================================================
--- linux-2.6.25-rc3.orig/arch/powerpc/sysdev/fsl_soc.c
+++ linux-2.6.25-rc3/arch/powerpc/sysdev/fsl_soc.c
@@ -150,7 +150,8 @@ EXPORT_SYMBOL(get_baudrate);
 #endif /* CONFIG_CPM2 */

 #ifdef CONFIG_FIXED_PHY
-static int __init of_add_fixed_phys(void)
+#warning fixed_phy_add
+/* static */ int /* __init */ of_add_fixed_phys(void)
 {
        int ret;
        struct device_node *np;
@@ -177,7 +178,9 @@ static int __init of_add_fixed_phys(void

        return 0;
 }
+#if 0
 arch_initcall(of_add_fixed_phys);
+#endif
 #endif /* CONFIG_FIXED_PHY */

 static int __init gfar_mdio_of_init(void)
Index: linux-2.6.25-rc3/drivers/net/phy/fixed.c
===================================================================
--- linux-2.6.25-rc3.orig/drivers/net/phy/fixed.c
+++ linux-2.6.25-rc3/drivers/net/phy/fixed.c
@@ -170,6 +170,7 @@ int fixed_phy_set_link_update(struct phy
 }
 EXPORT_SYMBOL_GPL(fixed_phy_set_link_update);

+#warning fixed_phy_add
 int fixed_phy_add(unsigned int irq, int phy_id,
                  struct fixed_phy_status *status)
 {
--
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