tree 8b344d8d5355b30e8deff901180edc708a653227
parent e9a470f445271eb157ee860a93b062324402fc3a
author Felipe Balbi <balbi@ti.com> 1300703108 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1303518713 -0700

tty: make receive_buf() return the amout of bytes received

it makes it simpler to keep track of the amount of
bytes received and simplifies how flush_to_ldisc counts
the remaining bytes. It also fixes a bug of lost bytes
on n_tty when flushing too many bytes via the USB
serial gadget driver.

Tested-by: Stefan Bigler <stefan.bigler@keymile.com>
Tested-by: Toby Gray <toby.gray@realvnc.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>