diff options
| author | Felipe Balbi <balbi@ti.com> | 2011-03-21 12:25:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-22 17:31:53 -0700 |
| commit | b1c43f82c5aa265442f82dba31ce985ebb7aa71c (patch) | |
| tree | 8b344d8d5355b30e8deff901180edc708a653227 /drivers/bluetooth/hci_ldisc.c | |
| parent | e9a470f445271eb157ee860a93b062324402fc3a (diff) | |
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>
Diffstat (limited to 'drivers/bluetooth/hci_ldisc.c')
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 48ad2a7ab080..0d4da5e14ba0 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -357,22 +357,26 @@ static void hci_uart_tty_wakeup(struct tty_struct *tty) * * Return Value: None */ -static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) +static unsigned int hci_uart_tty_receive(struct tty_struct *tty, + const u8 *data, char *flags, int count) { struct hci_uart *hu = (void *)tty->disc_data; + int received; if (!hu || tty != hu->tty) - return; + return -ENODEV; if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) - return; + return -EINVAL; spin_lock(&hu->rx_lock); - hu->proto->recv(hu, (void *) data, count); + received = hu->proto->recv(hu, (void *) data, count); hu->hdev->stat.byte_rx += count; spin_unlock(&hu->rx_lock); tty_unthrottle(tty); + + return received; } static int hci_uart_register_dev(struct hci_uart *hu) |