diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c
index fa09debad4b7c18b34966ebb3bd13bcca0937b9e..93c707257637cdea3b40eb472e7ab7baa442245f 100644
--- a/arch/x86_64/kernel/mce_amd.c
+++ b/arch/x86_64/kernel/mce_amd.c
@@ -401,7 +401,6 @@ static __cpuinit int allocate_threshold_blocks(unsigned int cpu,
 	b = kzalloc(sizeof(struct threshold_block), GFP_KERNEL);
 	if (!b)
 		return -ENOMEM;
-	memset(b, 0, sizeof(struct threshold_block));
 
 	b->block = block;
 	b->bank = bank;
@@ -490,7 +489,6 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 		err = -ENOMEM;
 		goto out;
 	}
-	memset(b, 0, sizeof(struct threshold_bank));
 
 	kobject_set_name(&b->kobj, "threshold_bank%i", bank);
 	b->kobj.parent = &per_cpu(device_mce, cpu).kobj;
diff --git a/drivers/input/gameport/ns558.c b/drivers/input/gameport/ns558.c
index f68dbe6f7f04634ca7bf63688555de65be85f7f0..7b7a546323cfc1c2d65fea2663d1f3f50399f78e 100644
--- a/drivers/input/gameport/ns558.c
+++ b/drivers/input/gameport/ns558.c
@@ -151,7 +151,6 @@ static int ns558_isa_probe(int io)
 		return -ENOMEM;
 	}
 
-	memset(ns558, 0, sizeof(struct ns558));
 	ns558->io = io;
 	ns558->size = 1 << i;
 	ns558->gameport = port;
diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c
index 95b79685a9d1e1f72dbe6b36f68748c60c7bd034..3c2ab8394e3f987b71a555461e98c3c0b1a58e3e 100644
--- a/drivers/pnp/pnpbios/rsparser.c
+++ b/drivers/pnp/pnpbios/rsparser.c
@@ -530,7 +530,6 @@ pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_de
 			dev_id =  kzalloc(sizeof (struct pnp_id), GFP_KERNEL);
 			if (!dev_id)
 				return NULL;
-			memset(dev_id, 0, sizeof(struct pnp_id));
 			pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24,id);
 			memcpy(&dev_id->id, id, 7);
 			pnp_add_id(dev_id, dev);