[PATCH] m32r: fix build failure

[PATCH] m32r: fix build failure

[Sudip Mukherjee]

m32r allmodconfig build was failing with the error:
ERROR: "smp_flush_cache_all" [drivers/misc/lkdtm.ko] undefined!

lkdtm driver at drivers/misc is using flush_icache_range() which for
m32r is defined as smp_flush_cache_all() if CONFIG_SMP is defined.
But as smp_flush_cache_all() was not exported so the build was failing
with the error of undefined symbol.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
---

Hi Andrew,
as usual sending the patch to you as m32r arch is orphan.
build log is at:
https://travis-ci.org/sudipm-mukherjee/parport/jobs/132180911

 arch/m32r/kernel/smp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 62d6961..564052e 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -164,6 +164,7 @@ void smp_flush_cache_all(void)
 	spin_unlock(&flushcache_lock);
 	preempt_enable();
 }
+EXPORT_SYMBOL(smp_flush_cache_all);
 
 void smp_flush_cache_all_interrupt(void)
 {
-- 
1.9.1

[PATCH] m32r: fix build failure

[Sudip Mukherjee]

From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>

The allmodconfig build of m32r is failing with the error:
lib/mpi/mpih-div.o: In function 'mpihelp_divrem':
mpih-div.c:(.text+0x40): undefined reference to 'abort'
mpih-div.c:(.text+0x40): relocation truncated to fit:
	R_M32R_26_PCREL_RELA against undefined symbol 'abort'

The function 'abort' was never defined for the m32r architecture.

Create 'abort' as is done in other arch like 'arm' and 'unicore32'.

Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
---

The build log of next-20170929 is at:
https://travis-ci.org/sudipm-mukherjee/parport/jobs/281164217

 arch/m32r/kernel/traps.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/m32r/kernel/traps.c b/arch/m32r/kernel/traps.c
index 647dd94..72b96f2 100644
--- a/arch/m32r/kernel/traps.c
+++ b/arch/m32r/kernel/traps.c
@@ -114,6 +114,15 @@ static void set_eit_vector_entries(void)
 	_flush_cache_copyback_all();
 }
 
+void abort(void)
+{
+	BUG();
+
+	/* if that doesn't kill us, halt */
+	panic("Oops failed to kill thread");
+}
+EXPORT_SYMBOL(abort);
+
 void __init trap_init(void)
 {
 	set_eit_vector_entries();
-- 
2.7.4