tty_io: Use kzalloc

Also remove needless casts.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 8 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a37e6330db8..fde69e589ca 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2033,11 +2033,9 @@ static int init_dev(struct tty_driver *driver, int idx,
         }
 
         if (!*ltp_loc) {
-                ltp = (struct ktermios *) kmalloc(sizeof(struct ktermios),
-                                                 GFP_KERNEL);
+                ltp = kzalloc(sizeof(struct ktermios), GFP_KERNEL);
                 if (!ltp)
                         goto free_mem_out;
-                memset(ltp, 0, sizeof(struct ktermios));
         }
 
         if (driver->type == TTY_DRIVER_TYPE_PTY) {
@@ -2066,11 +2064,9 @@ static int init_dev(struct tty_driver *driver, int idx,
                 }
 
                 if (!*o_ltp_loc) {
-                        o_ltp = (struct ktermios *)
-                                kmalloc(sizeof(struct ktermios), GFP_KERNEL);
+                        o_ltp = kzalloc(sizeof(struct ktermios), GFP_KERNEL);
                         if (!o_ltp)
                                 goto free_mem_out;
-                        memset(o_ltp, 0, sizeof(struct ktermios));
                 }
 
                 /*
@@ -3755,9 +3751,8 @@ struct tty_driver *alloc_tty_driver(int lines)
 {
         struct tty_driver *driver;
 
-        driver = kmalloc(sizeof(struct tty_driver), GFP_KERNEL);
+        driver = kzalloc(sizeof(struct tty_driver), GFP_KERNEL);
         if (driver) {
-                memset(driver, 0, sizeof(struct tty_driver));
                 driver->magic = TTY_DRIVER_MAGIC;
                 driver->num = lines;
                 /* later we'll move allocation of tables here */