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powerpc: Fix build break with PPC_EARLY_DEBUG_BOOTX=y 

A kernel configured with PPC_EARLY_DEBUG_BOOTX=y but PPC_PMAC=n and
PPC_MAPLE=n will fail to link:

  btext.c:(.text+0x2d0fc): undefined reference to `.rmci_off'
  btext.c:(.text+0x2d214): undefined reference to `.rmci_on'

Fix it by making the build of rmci_on/off() depend on
PPC_EARLY_DEBUG_BOOTX, which also enable the only code that uses them.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2013-11-29 14:55:22 +11:00 committed by Benjamin Herrenschmidt
parent e80ba46120
commit 2d6f0c3ae6
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/kernel/misc_64.S
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@ -246,8 +246,8 @@ _GLOBAL(__bswapdi2)
or r3,r7,r9
blr
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
#ifdef CONFIG_PPC_EARLY_DEBUG_BOOTX
_GLOBAL(rmci_on)
sync
isync
@ -277,6 +277,9 @@ _GLOBAL(rmci_off)
isync
sync
blr
#endif /* CONFIG_PPC_EARLY_DEBUG_BOOTX */
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
/*
* Do an IO access in real mode