ARM: lpc32xx: Use kmemdup to replace duplicating its implementation

xiongzhongjiang · vzapolskiy · commit 801da462e88d · 2019-02-03T21:40:09.000+02:00
kmemdup is better than kmalloc() + memcpy(), and we do not like
open code. So just use kmemdup instead.

Signed-off-by: zhong jiang &lt;zhongjiang@huawei.com&gt;
[vzapolskiy: resolved a merge conflict]
Signed-off-by: Vladimir Zapolskiy &lt;vz@mleia.com&gt;
diff --git a/arch/arm/mach-lpc32xx/pm.c b/arch/arm/mach-lpc32xx/pm.c
@@ -86,14 +86,11 @@ static int lpc32xx_pm_enter(suspend_state_t state)
 	void *iram_swap_area;
 
 	/* Allocate some space for temporary IRAM storage */
-	iram_swap_area = kmalloc(lpc32xx_sys_suspend_sz, GFP_KERNEL);
+	iram_swap_area = kmemdup((void *)TEMP_IRAM_AREA,
+				 lpc32xx_sys_suspend_sz, GFP_KERNEL);
 	if (!iram_swap_area)
 		return -ENOMEM;
 
-	/* Backup a small area of IRAM used for the suspend code */
-	memcpy(iram_swap_area, (void *) TEMP_IRAM_AREA,
-		lpc32xx_sys_suspend_sz);
-
 	/*
 	 * Copy code to suspend system into IRAM. The suspend code
 	 * needs to run from IRAM as DRAM may no longer be available
