Commit e16343c4 authored Sep 24, 2014 by Uwe Kleine-König Committed by Russell King Sep 26, 2014

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

The warning was introduced in 2009 (commit 4bf1fa5a ([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>

parent c3c963e1

arch/arm/kernel/return_address.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -59,10 +59,6 @@ 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

		#endif /* if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) / else */

		EXPORT_SYMBOL_GPL(return_address);