Hello.

On 1/26/2015 12:40 PM, Wenyou Yang wrote:

To decrease the suspend time, move the copying the sram function
to the sram initialization phase, instead of every time go to suspend.

Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
Acked-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
---
  arch/arm/mach-at91/pm.c |    7 +++----
  1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 5dd4e41..409185e 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -161,10 +161,6 @@ static int at91_pm_enter(suspend_state_t state)
                         * turning off the main oscillator; reverse on wakeup.
                         */
                        if (slow_clock) {
-#ifdef CONFIG_AT91_SLOW_CLOCK
-                               /* copy slow_clock handler to SRAM, and call it 
*/
-                               memcpy(slow_clock, at91_slow_clock, 
at91_slow_clock_sz);
-#endif
                                slow_clock(at91_pmc_base, at91_ramc_base[0],
                                           at91_ramc_base[1],
                                           at91_pm_data.memctrl);
@@ -272,6 +268,9 @@ static void __init at91_pm_sram_init(void)
        sram_pbase = gen_pool_virt_to_phys(sram_pool, sram_base);
        slow_clock = __arm_ioremap_exec(sram_pbase, at91_slow_clock_sz, false);

+       /* Copy slow_clock handler to SRAM, and call it */

   You're not calling it here.

+       memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz);
+
  put_node:
        of_node_put(node);
  }

WBR, Sergei

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