x86/mrst: Cocci spatch "memdup.spatch"

diff -u -p a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
@@ -356,10 +356,9 @@ static int __init sfi_parse_gpio(struct
 	num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry);
 	pentry = (struct sfi_gpio_table_entry *)sb->pentry;
 
-	gpio_table = kmalloc(num * sizeof(*pentry), GFP_KERNEL);
+	gpio_table = kmemdup(pentry, num * sizeof(*pentry), GFP_KERNEL);
 	if (!gpio_table)
 		return -1;
-	memcpy(gpio_table, pentry, num * sizeof(*pentry));
 	gpio_num_entry = num;
 
 	pr_debug("GPIO pin info:\n");

@@ -744,13 +743,12 @@ static void __init intel_scu_spi_device_
 		return;
 	}
 
-	new_dev = kzalloc(sizeof(*sdev), GFP_KERNEL);
+	new_dev = kmemdup(sdev, sizeof(*sdev), GFP_KERNEL);
 	if (!new_dev) {
 		pr_err("failed to alloc mem for delayed spi dev %s\n",
 			sdev->modalias);
 		return;
 	}
-	memcpy(new_dev, sdev, sizeof(*sdev));
 
 	spi_devs[spi_next_dev++] = new_dev;
 }

@@ -765,13 +763,12 @@ static void __init intel_scu_i2c_device_
 		return;
 	}
 
-	new_dev = kzalloc(sizeof(*idev), GFP_KERNEL);
+	new_dev = kmemdup(idev, sizeof(*idev), GFP_KERNEL);
 	if (!new_dev) {
 		pr_err("failed to alloc mem for delayed i2c dev %s\n",
 			idev->type);
 		return;
 	}
-	memcpy(new_dev, idev, sizeof(*idev));
 
 	i2c_bus[i2c_next_dev] = bus;
 	i2c_devs[i2c_next_dev++] = new_dev;