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| author |   Johan Hovold <johan@kernel.org> | 2018-05-18 15:25:47 +0200 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2018-05-21 10:03:49 +0200 |
| commit | 5ada98427f12f5c19d6f93bfe02f23fe4531b978 (patch) | |
| tree | e91face47f588eabde03dcc8567962c912f34fac /drivers/usb/serial/ftdi_sio.c | |
| parent | USB: serial: use tty_port_register_device() (diff) | |
| download | linux-dev-5ada98427f12f5c19d6f93bfe02f23fe4531b978.tar.xz linux-dev-5ada98427f12f5c19d6f93bfe02f23fe4531b978.zip | |
USB: serial: ftdi_sio: fix IXON/IXOFF mixup
Since forever this driver has had IXON and IXOFF mixed up, and has used
the latter rather than the former to enable hardware-assisted software
flow control on output.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 7ea221d42dba..62c99871863c 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2342,12 +2342,8 @@ no_c_cflag_changes: } else { /* * Xon/Xoff code - * - * Check the IXOFF status in the iflag component of the - * termios structure. If IXOFF is not set, the pre-xon/xoff - * code is executed. */ - if (iflag & IXOFF) { + if (iflag & IXON) { dev_dbg(ddev, "%s request to enable xonxoff iflag=%04x\n", __func__, iflag); /* Try to enable the XON/XOFF on the ftdi_sio @@ -2372,7 +2368,7 @@ no_c_cflag_changes: } } else { /* else clause to only run if cflag ! CRTSCTS and iflag - * ! XOFF. CHECKME Assuming XON/XOFF handled by tty + * ! XON. CHECKME Assuming XON/XOFF handled by tty * stack - not by device */ dev_dbg(ddev, "%s Turning off hardware flow control\n", __func__); if (usb_control_msg(dev, |