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| author | Arnd Bergmann <arnd@arndb.de> | 2011-12-06 14:23:35 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-12-06 14:23:35 +0000 |
| commit | 3642a0a2c7d2d1949988d0fd004a8039c1f3d02f (patch) | |
| tree | e687c88b1b66ad51a6a6c529f7f328f2d3b625fa /drivers/usb/serial/ftdi_sio.c | |
| parent | 58a273745fbb2fbd01d26e7a60f0acc8c1d99469 (diff) | |
| parent | b07fed455c883f07f8e847f5b0d79975b4dc8e7a (diff) | |
| download | op-kernel-dev-3642a0a2c7d2d1949988d0fd004a8039c1f3d02f.zip op-kernel-dev-3642a0a2c7d2d1949988d0fd004a8039c1f3d02f.tar.gz | |
Merge branch 'mxs/saif' into next/drivers
Conflicts:
drivers/net/ethernet/cadence/Kconfig
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 8fe034d..bd4298b 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2104,13 +2104,19 @@ static void ftdi_set_termios(struct tty_struct *tty, cflag = termios->c_cflag; - /* FIXME -For this cut I don't care if the line is really changing or - not - so just do the change regardless - should be able to - compare old_termios and tty->termios */ + if (old_termios->c_cflag == termios->c_cflag + && old_termios->c_ispeed == termios->c_ispeed + && old_termios->c_ospeed == termios->c_ospeed) + goto no_c_cflag_changes; + /* NOTE These routines can get interrupted by ftdi_sio_read_bulk_callback - need to examine what this means - don't see any problems yet */ + if ((old_termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)) == + (termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB))) + goto no_data_parity_stop_changes; + /* Set number of data bits, parity, stop bits */ urb_value = 0; @@ -2151,6 +2157,7 @@ static void ftdi_set_termios(struct tty_struct *tty, } /* Now do the baudrate */ +no_data_parity_stop_changes: if ((cflag & CBAUD) == B0) { /* Disable flow control */ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), @@ -2178,6 +2185,7 @@ static void ftdi_set_termios(struct tty_struct *tty, /* Set flow control */ /* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */ +no_c_cflag_changes: if (cflag & CRTSCTS) { dbg("%s Setting to CRTSCTS flow control", __func__); if (usb_control_msg(dev, |
