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ARM: 8160/1: drop warning about return_address not using unwind tables

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The warning was introduced in 2009 (commit 4bf1fa5a34 ([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.

Change-Id: I40661f7415dffcc6b5421273666a2e9feadce784
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
This commit is contained in:
Uwe Kleine-König
2019-08-05 09:13:26 +02:00
committed by Francescodario Cuzzocrea
parent 91a66eb612
commit 32385b90c7
1 changed files with 0 additions and 4 deletions
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arch/arm/kernel/return_address.c
-4
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@@ -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;