drivers, usb: convert ep_data.count from atomic_t to refcount_t
authorElena Reshetova <elena.reshetova@intel.com>
Mon, 6 Mar 2017 14:21:14 +0000 (16:21 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 Mar 2017 04:32:59 +0000 (13:32 +0900)
commit8d66db50b2ac9dbf5cca9ede64f1c859d7b86eb6
treec96d57baa39dbc208feca0b5e65f87515ba60bc0
parentb7ddc981d7b9e2fbfb33cb7cc47603d6e5d93bc9
drivers, usb: convert ep_data.count from atomic_t to refcount_t

refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/legacy/inode.c