greybus: zero all data buffers

Don't assume the buffer data area will all be overwritten.  Zero all
buffer space, to avoid sending crap over the wire.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/es1-ap-usb.c b/drivers/staging/greybus/es1-ap-usb.c
index e55ad03..2405670 100644 (file)
--- a/drivers/staging/greybus/es1-ap-usb.c
+++ b/drivers/staging/greybus/es1-ap-usb.c
@@ -113,7 +113,7 @@ static int alloc_gbuf_data(struct gbuf *gbuf, unsigned int size,
         * CPort Id before the data; set aside an extra byte for
         * that purpose in that case.
         */
-       buffer = kmalloc(cport_reserve + size, gfp_mask);
+       buffer = kzalloc(cport_reserve + size, gfp_mask);
        if (!buffer)
                return -ENOMEM;