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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-06-13 15:58:34 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-06-24 08:48:43 +0100
commite8856a8797e76e6883ae81f8f9ecbb231cc535df (patch)
treef256d1100f2458e01ca2680052466b24bbabe664 /arch/arm/mach-sa1100
parentdbc125168fd7dda4ffb24a29548746c7bd3b3d87 (diff)
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')
-rw-r--r--arch/arm/mach-sa1100/sleep.S13
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/arm/mach-sa1100/sleep.S b/arch/arm/mach-sa1100/sleep.S
index 122ab3c6692..f3fe39773f8 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