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

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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>

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Felipe Balbi 2011-03-21 12:25:08 +02:00 • committed by Greg Kroah-Hartman

parent e9a470f445

commit b1c43f82c5

20 changed files with 125 additions and 113 deletions

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9

include/linux/tty_ldisc.h

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