ARM: 6649/1: omap: use fncpy to copy the PM code functions to SRAM

The new fncpy API is better suited* for copying some
code to SRAM at runtime. This patch changes the ad-hoc
code to the more generic fncpy API.

*: 1. fncpy ensures that the thumb mode bit is propagated,
   2. fncpy provides the security of type safety between the
     original function and the sram function pointer.

Tested OK on OMAP3 in low power modes (RET/OFF)
using omap2plus_defconfig with !CONFIG_THUMB2_KERNEL.
Compile tested on OMAP1/2 using omap1_defconfig.

Boot tested on OMAP1 & OMAP2
Tested OK with suspend/resume on OMAP2420/n810

Boots fine on osk5912 and n800

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index 1c1b0ab5b97..39580e6060e 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -92,7 +92,7 @@ extern void omap24xx_idle_loop_suspend(void);
 extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
 					void __iomem *sdrc_power);
 extern void omap34xx_cpu_suspend(u32 *addr, int save_state);
-extern void save_secure_ram_context(u32 *addr);
+extern int save_secure_ram_context(u32 *addr);
 extern void omap3_save_scratchpad_contents(void);
 
 extern unsigned int omap24xx_idle_loop_suspend_sz;