linux-kernel - linux-next: build failure after merge of the dt-rh tree

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Date:	Mon, 28 Oct 2013 19:38:14 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Rob Herring <robherring2@...il.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Michael Ellerman <michael@...erman.id.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	<linuxppc-dev@...ts.ozlabs.org>,
	Rob Herring <rob.herring@...xeda.com>
Subject: linux-next: build failure after merge of the dt-rh tree

Hi Rob,

After merging the dt-rh tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

arch/powerpc/platforms/powernv/rng.c: In function 'rng_init_per_cpu':
arch/powerpc/platforms/powernv/rng.c:64:2: error: implicit declaration of function 'of_get_ibm_chip_id' [-Werror=implicit-function-declaration]
  chip_id = of_get_ibm_chip_id(dn);
  ^
arch/powerpc/platforms/powernv/rng.c: In function 'rng_create':
arch/powerpc/platforms/powernv/rng.c:85:2: error: implicit declaration of function 'of_iomap' [-Werror=implicit-function-declaration]
  rng->regs = of_iomap(dn, 0);
  ^
arch/powerpc/platforms/powernv/rng.c:85:12: error: assignment makes pointer from integer without a cast [-Werror]
  rng->regs = of_iomap(dn, 0);
            ^

Caused by commit a4da0d50b2a0 ("powerpc: Implement
arch_get_random_long/int() for powernv") from the powerpc tree
interacting with commit b5b4bb3f6a11 ("of: only include prom.h on sparc")
from the dt-rh tree.

I added this merge fix patch (which will need to be sent to Linus when
these two trees get merged, or could be applied now to the powerpc tree):

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Mon, 28 Oct 2013 19:34:41 +1100
Subject: [PATCH] powerpc: add include of prom.h to fix powernv/rng.c build

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 arch/powerpc/platforms/powernv/rng.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/rng.c b/arch/powerpc/platforms/powernv/rng.c
index 02db7d73cf8b..483b06640efb 100644
--- a/arch/powerpc/platforms/powernv/rng.c
+++ b/arch/powerpc/platforms/powernv/rng.c
@@ -11,10 +11,12 @@
 
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/slab.h>
 #include <asm/archrandom.h>
 #include <asm/io.h>
+#include <asm/prom.h>
 #include <asm/machdep.h>
 
 
-- 
1.8.4.rc3

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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