aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/usb/serial/ftdi_sio.c
diff options
context:
space:
mode:
authorJohan Hovold <jhovold@gmail.com>2010-10-11 20:23:36 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-10-22 10:22:09 -0700
commitc19db4c9e49a049054594272d408e101aaf41b27 (patch)
tree1e026e2ce178a8e27e7fe97934166f8a25b12757 /drivers/usb/serial/ftdi_sio.c
parent3ed780117dbe5acb64280d218f0347f238dafed0 (diff)
downloadmrst-s0i3-test-c19db4c9e49a049054594272d408e101aaf41b27.tar.gz
mrst-s0i3-test-c19db4c9e49a049054594272d408e101aaf41b27.tar.xz
mrst-s0i3-test-c19db4c9e49a049054594272d408e101aaf41b27.zip
USB: ftdi_sio: set device latency timeout at port probe
No need to set latency timeout at every open. This also fixes an issue with the read latency being as high as 250ms (instead of 1ms) for the first read after port probe. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
-rw-r--r--drivers/usb/serial/ftdi_sio.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 89284df2f8d..d3e58b56f56 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1589,6 +1589,7 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
ftdi_set_max_packet_size(port);
if (read_latency_timer(port) < 0)
priv->latency = 16;
+ write_latency_timer(port);
create_sysfs_attrs(port);
return 0;
}
@@ -1717,8 +1718,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
dbg("%s", __func__);
- write_latency_timer(port);
-
/* No error checking for this (will get errors later anyway) */
/* See ftdi_sio.h for description of what is reset */
usb_control_msg(dev, usb_sndctrlpipe(dev, 0),