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Commit 31cd08c3 authored by Russell King's avatar Russell King
Browse files

ARM: remove __bad_xchg definition 



We want link errors if xchg() is called for a variable size we do not
support.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 45b0fa09

arch/arm/include/asm/cmpxchg.h

+1 −0
Original line number Diff line number Diff line
@@ -94,6 +94,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size 
		break;

#endif

	default:

		/* Cause a link-time error, the xchg() size is not supported */

		__bad_xchg(ptr, size), ret = 0;

		break;

	}

arch/arm/kernel/traps.c

+0 −8
Original line number Diff line number Diff line
@@ -749,14 +749,6 @@ late_initcall(arm_mrc_hook_init); 


#endif



void __bad_xchg(volatile void *ptr, int size)

{

	pr_err("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n",

	       __builtin_return_address(0), ptr, size);

	BUG();

}

EXPORT_SYMBOL(__bad_xchg);



/*

 * A data abort trap was taken, but we did not handle the instruction.

 * Try to abort the user program, or panic if it was the kernel.