diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2014-09-24 08:51:57 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-11-11 13:34:51 +0000 |
| commit | 747ea873db4fb9836bacfdc6f4d7d7d11d3d808d (patch) | |
| tree | 5c9ee3a569a63f3173bb99489f01a1097763c7c1 | |
| parent | 32a6af2a2753ca072c46887af39e2aaaab38ed4b (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>
| -rw-r--r-- | arch/arm/kernel/return_address.c | 4 |
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" -#endif - void *return_address(unsigned int level) { return NULL; |