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serial: of-serial: fix uninitialized kmalloc variable 

The info pointer points to an uninitialized kmalloced space.
If a device doesn't have clk property, then info->clk may
have unpredicated value and cause call trace. So use kzalloc
to make sure it is NULL initialized.

Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jingchang Lu 2014-10-21 16:50:21 +08:00 committed by Greg Kroah-Hartman
parent 9e326f7871
commit 7e12e675c1
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/of_serial.c
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@ -158,7 +158,7 @@ static int of_platform_serial_probe(struct platform_device *ofdev)
if (of_find_property(ofdev->dev.of_node, "used-by-rtas", NULL))
return -EBUSY;
info = kmalloc(sizeof(*info), GFP_KERNEL);
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (info == NULL)
return -ENOMEM;