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Commit aaaa3f9e authored by Catalin Marinas's avatar Catalin Marinas Committed by Russell King
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[PATCH] ARM: 2769/1: cpu_init() stack setup fix 



Patch from Catalin Marinas

The compiler allocates r14 for the stk variable in the __asm__ directive.
This is a shadowed register and gets changed when the mode is changed,
causing random values in the SP register. The patch adds a clobber for
the r14 register.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 9ec3c75c

arch/arm/kernel/setup.c

+2 −1
Original line number Diff line number Diff line
@@ -359,7 +359,8 @@ void cpu_init(void) 
	      "I" (offsetof(struct stack, abt[0])),

	      "I" (PSR_F_BIT | PSR_I_BIT | UND_MODE),

	      "I" (offsetof(struct stack, und[0])),

	      "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE));

	      "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE)

	    : "r14");

}



static struct machine_desc * __init setup_machine(unsigned int nr)