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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-13 16:58:34 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-24 09:48:43 +0200 |
| commit | e8856a8797e76e6883ae81f8f9ecbb231cc535df (patch) | |
| tree | f256d1100f2458e01ca2680052466b24bbabe664 /arch/arm/mach-sa1100/sleep.S | |
| parent | ARM: pm: move sa1100 to use proper suspend func arg0 (diff) | |
| download | linux-e8856a8797e76e6883ae81f8f9ecbb231cc535df.tar.xz linux-e8856a8797e76e6883ae81f8f9ecbb231cc535df.zip | |
ARM: pm: convert cpu_suspend() to a normal function
cpu_suspend() has a weird calling method which makes it only possible to
call from assembly code: it returns with a modified stack pointer to
finish the suspend, but on resume, it 'returns' via a provided pointer.
We can make cpu_suspend() appear to be a normal function merely by
swapping the resume pointer argument and the link register.
Do so, and update all callers to take account of this more traditional
behaviour.
Acked-by: Frank Hofmann <frank.hofmann@tomtom.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-sa1100/sleep.S')
| -rw-r--r-- | arch/arm/mach-sa1100/sleep.S | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/arm/mach-sa1100/sleep.S b/arch/arm/mach-sa1100/sleep.S index 122ab3c66923..f3fe39773f8b 100644 --- a/arch/arm/mach-sa1100/sleep.S +++ b/arch/arm/mach-sa1100/sleep.S @@ -31,9 +31,11 @@ ENTRY(sa1100_cpu_suspend) stmfd sp!, {r4 - r12, lr} @ save registers on stack mov r1, r0 - ldr r3, =sa1100_cpu_resume @ return function + adr r3, BSYM(sa1100_finish_suspend) bl cpu_suspend + ldmfd sp!, {r4 - r12, pc} @ return to caller +sa1100_finish_suspend: @ disable clock switching mcr p15, 0, r1, c15, c2, 2 @@ -139,12 +141,3 @@ sa1110_sdram_controller_fix: str r13, [r12] 20: b 20b @ loop waiting for sleep - -/* - * cpu_sa1100_resume() - * - * entry point from bootloader into kernel during resume - */ - .align 5 -sa1100_cpu_resume: - ldmfd sp!, {r4 - r12, pc} @ return to caller |