Patch "powerpc: Fix build warning on 32-bit PPC" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

powerpc: Fix build warning on 32-bit PPC

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
powerpc-fix-build-warning-on-32-bit-ppc.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Larry Finger <[email protected]>
Date: Thu, 22 Dec 2016 21:06:53 -0600
Subject: powerpc: Fix build warning on 32-bit PPC

From: Larry Finger <[email protected]>

commit 8ae679c4bc2ea2d16d92620da8e3e9332fa4039f upstream.

I am getting the following warning when I build kernel 4.9-git on my PowerBook G4 with a 32-bit PPC processor:

AS arch/powerpc/kernel/misc_32.o
arch/powerpc/kernel/misc_32.S:299:7: warning: "CONFIG_FSL_BOOKE" is not defined [-Wundef]

This problem is evident after commit 989cea5c14be ("kbuild: prevent lib-ksyms.o rebuilds"); however, this change in kbuild only exposes an error that has been in the code since 2005 when this source file was created. That was with commit 9994a33865f4 ("powerpc: Introduce entry_{32,64}.S, misc_{32,64}.S, systbl.S").

The offending line does not make a lot of sense. This error does not seem to cause any errors in the executable, thus I am not recommending that it be applied to any stable versions.

Thanks to Nicholas Piggin for suggesting this solution.

---
 arch/powerpc/kernel/misc_32.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -296,7 +296,7 @@ _GLOBAL(flush_instruction_cache)
 	lis	r3, KERNELBASE@h
 	iccci	0,r3
 #endif
-#elif CONFIG_FSL_BOOKE
+#elif defined(CONFIG_FSL_BOOKE)
 BEGIN_FTR_SECTION
 	mfspr   r3,SPRN_L1CSR0
 	ori     r3,r3,L1CSR0_CFI|L1CSR0_CLFC

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/powerpc-fix-build-warning-on-32-bit-ppc.patch