linux-kernel - [PATCH 04/12] pm: at91: move the copying the sram function to the sram initializationi phase

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Message-ID: <1421741825-18226-5-git-send-email-wenyou.yang@atmel.com>
Date:	Tue, 20 Jan 2015 16:16:57 +0800
From:	Wenyou Yang <wenyou.yang@...el.com>
To:	<nicolas.ferre@...el.com>, <linux@....linux.org.uk>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	<alexandre.belloni@...e-electrons.com>,
	<sylvain.rochet@...secur.com>, <peda@...ntia.se>,
	<wenyou.yang@...el.com>
Subject: [PATCH 04/12] pm: at91: move the copying the sram function to the sram initializationi phase

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.yang@...el.com>
Acked-by: Alexandre Belloni <alexandre.belloni@...e-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 0990486..609a4f8 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -169,10 +169,6 @@ 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);
@@ -280,6 +276,9 @@ 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 */
+	memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz);
+
 put_node:
 	of_node_put(node);
 }
-- 
1.7.9.5

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