According to Documentation/CodingStyle:

"The preferred form for passing a size of a struct is the following:

	p = kmalloc(sizeof(*p), ...);"

so do as suggested.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>