some kmalloc/memset ->kzalloc (tree wide)

Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 6 insertions, 12 deletions

diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index 5a7b49c..b10ffae 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -117,15 +117,13 @@ static int amba_kmi_probe(struct amba_device *dev, void *id)
 	if (ret)
 		return ret;
 
-	kmi = kmalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
-	io = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	kmi = kzalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
+	io = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!kmi || !io) {
 		ret = -ENOMEM;
 		goto out;
 	}
 
-	memset(kmi, 0, sizeof(struct amba_kmi_port));
-	memset(io, 0, sizeof(struct serio));
 
 	io->id.type	= SERIO_8042;
 	io->write	= amba_kmi_write;
diff --git a/drivers/input/serio/pcips2.c b/drivers/input/serio/pcips2.c
index ea5e3c6..1b404f9 100644
--- a/drivers/input/serio/pcips2.c
+++ b/drivers/input/serio/pcips2.c
@@ -140,15 +140,13 @@ static int __devinit pcips2_probe(struct pci_dev *dev, const struct pci_device_i
 	if (ret)
 		goto disable;
 
-	ps2if = kmalloc(sizeof(struct pcips2_data), GFP_KERNEL);
-	serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	ps2if = kzalloc(sizeof(struct pcips2_data), GFP_KERNEL);
+	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!ps2if || !serio) {
 		ret = -ENOMEM;
 		goto release;
 	}
 
-	memset(ps2if, 0, sizeof(struct pcips2_data));
-	memset(serio, 0, sizeof(struct serio));
 
 	serio->id.type		= SERIO_8042;
 	serio->write		= pcips2_write;
diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c
index d31ece8..2ad8878 100644
--- a/drivers/input/serio/sa1111ps2.c
+++ b/drivers/input/serio/sa1111ps2.c
@@ -234,15 +234,13 @@ static int __devinit ps2_probe(struct sa1111_dev *dev)
 	struct serio *serio;
 	int ret;
 
-	ps2if = kmalloc(sizeof(struct ps2if), GFP_KERNEL);
-	serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	ps2if = kzalloc(sizeof(struct ps2if), GFP_KERNEL);
+	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!ps2if || !serio) {
 		ret = -ENOMEM;
 		goto free;
 	}
 
-	memset(ps2if, 0, sizeof(struct ps2if));
-	memset(serio, 0, sizeof(struct serio));
 
 	serio->id.type		= SERIO_8042;
 	serio->write		= ps2_write;