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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2014-09-24 08:51:57 +0100
committerBen Hutchings <ben@decadent.org.uk>2017-11-11 13:34:51 +0000
commit747ea873db4fb9836bacfdc6f4d7d7d11d3d808d (patch)
parent32a6af2a2753ca072c46887af39e2aaaab38ed4b (diff)
ARM: 8160/1: drop warning about return_address not using unwind tables
commit e16343c47e4276f5ebc77ca16feb5e50ca1918f9 upstream. The warning was introduced in 2009 (commit 4bf1fa5a34aa ([ARM] 5613/1: implement CALLER_ADDRESSx)). The only "problem" here is that CALLER_ADDRESSx for x > 1 returns NULL which doesn't do much harm. The drawback of implementing a fix (i.e. use unwind tables to implement CALLER_ADDRESSx) is that much of the unwinder code would need to be marked as not traceable. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm/kernel/return_address.c b/arch/arm/kernel/return_address.c
index 8085417555dd..0697db65efaa 100644
--- a/arch/arm/kernel/return_address.c
+++ b/arch/arm/kernel/return_address.c
@@ -58,10 +58,6 @@ void *return_address(unsigned int level)
#else /* if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) */
-#if defined(CONFIG_ARM_UNWIND)
-#warning "TODO: return_address should use unwind tables"
void *return_address(unsigned int level)
return NULL;