When swi instruction is executed, it is expected to get message "software interrupt" in console and dump registers and reboot, as do_software_interrupt() in arch/arm/lib/interrupts.c. Actually it causes data abort in get_bad_stack_swi macro in arch/arm/cpu/v7/start.S. This patch fixes this problem.
Signed-off-by: Tetsuyuki Kobayashi koba@kmckk.co.jp --- Hello, I found this bug on KZM-A9-GT board (aka. kzm9g) on v2013.04-rc2. And tested this patch on the board. I found the same typo in arch/arm/cpu/{arm1136,arm1176,pxa}/start.S.
arch/arm/cpu/armv7/start.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 36a4c3c..9bf950b 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -465,7 +465,7 @@ ENDPROC(cpu_init_crit) @ spots for abort stack str lr, [r0] @ save caller lr in position 0 @ of saved stack - mrs r0, spsr @ get the spsr + mrs lr, spsr @ get the spsr str lr, [r0, #4] @ save spsr in position 1 of @ saved stack ldr r0, [r13] @ restore r0