usb: gadget: return the right length in ffs_epfile_io()

When the request length is aligned to maxpacketsize, sometimes
the return length ret > the user space requested len.

At that time, we will use min_t(size_t, ret, len) to limit the
size in case of user data buffer overflow.

But we need return the min_t(size_t, ret, len) to tell the user
space rightly also.

[ [email protected]: also fix comment's indentation ]

Acked-by: Michal Nazarewicz <[email protected]>
Reviewed-by: David Cohen <[email protected]>
Signed-off-by: Chuansheng Liu <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>

0 files changed, 0 insertions, 0 deletions