x86: kmalloc + memset conversion to kzalloc

arch/x86_64/kernel/io_apic.c | 56080 -> 56038 (-42 bytes)

also eliminate unnecessary local variable assignment.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 966fa10..66a27d2 100644 (file)
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -1845,7 +1845,7 @@ static struct sysdev_class ioapic_sysdev_class = {
 static int __init ioapic_init_sysfs(void)
 {
        struct sys_device * dev;
-       int i, size, error = 0;
+       int i, size, error;
 
        error = sysdev_class_register(&ioapic_sysdev_class);
        if (error)
@@ -1854,12 +1854,11 @@ static int __init ioapic_init_sysfs(void)
        for (i = 0; i < nr_ioapics; i++ ) {
                size = sizeof(struct sys_device) + nr_ioapic_registers[i]
                        * sizeof(struct IO_APIC_route_entry);
-               mp_ioapic_data[i] = kmalloc(size, GFP_KERNEL);
+               mp_ioapic_data[i] = kzalloc(size, GFP_KERNEL);
                if (!mp_ioapic_data[i]) {
                        printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
                        continue;
                }
-               memset(mp_ioapic_data[i], 0, size);
                dev = &mp_ioapic_data[i]->dev;
                dev->id = i;
                dev->cls = &ioapic_sysdev_class;