From 216ec27f3c5215d357f351fa103817c8b62ea804 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 11 Aug 2020 18:36:37 -0700 Subject: drivers/rapidio/devices/rio_mport_cdev.c: use struct_size() helper Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This issue was found with the help of Coccinelle and, audited and fixed manually. Addresses KSPP ID: https://github.com/KSPP/linux/issues/83 Signed-off-by: Gustavo A. R. Silva Signed-off-by: Andrew Morton Cc: Matt Porter Cc: Alexandre Bounine Link: http://lkml.kernel.org/r/20200619170843.GA24923@embeddedor Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/rio_mport_cdev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/rapidio') diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 451608e960a1..3abbba8c2b5b 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -1710,8 +1710,7 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv, if (rval & RIO_PEF_SWITCH) { rio_mport_read_config_32(mport, destid, hopcount, RIO_SWP_INFO_CAR, &swpinfo); - size += (RIO_GET_TOTAL_PORTS(swpinfo) * - sizeof(rswitch->nextdev[0])) + sizeof(*rswitch); + size += struct_size(rswitch, nextdev, RIO_GET_TOTAL_PORTS(swpinfo)); } rdev = kzalloc(size, GFP_KERNEL); -- cgit v1.2.3