From: David Clare <[EMAIL PROTECTED]>
Added a device specific ioctl function to prevent the disabling of canonical
mode. EINVAL is returned for any TCSETSF ioctl that doesn't have ICANON set.
This patch is for 2.6.17 or later kernels.
When "hwinfo --modem" is executed it opens the funsoft USB serial device and
disables canonical mode. The device is kept this way until hwininfo has
finished probing any modems on a system. The funsoft device expects to be
running in canonical mode. Switching the device to raw mode can cause
incomplete data packets and device timeouts.
Signed-off-by: David Clare <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/serial/funsoft.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/serial/funsoft.c b/drivers/usb/serial/funsoft.c
index 77b9772..d3be921 100644
--- a/drivers/usb/serial/funsoft.c
+++ b/drivers/usb/serial/funsoft.c
@@ -14,6 +14,9 @@
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
+#include <asm/uaccess.h>
+
+static int debug;
static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x1404, 0xcddc) },
@@ -21,6 +24,26 @@ static struct usb_device_id id_table [] = {
};
MODULE_DEVICE_TABLE(usb, id_table);
+static int funsoft_ioctl(struct usb_serial_port *port, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct termios t;
+
+ dbg("%s - port %d, cmd 0x%04x", __FUNCTION__, port->number, cmd);
+
+ if (cmd == TCSETSF) {
+ if (user_termios_to_kernel_termios(&t, (void __user *)arg))
+ return -EFAULT;
+
+ dbg("%s - iflag:%x oflag:%x cflag:%x lflag:%x", __FUNCTION__,
+ t.c_iflag, t.c_oflag, t.c_cflag, t.c_lflag);
+
+ if (!(t.c_lflag & ICANON))
+ return -EINVAL;
+ }
+ return -ENOIOCTLCMD;
+}
+
static struct usb_driver funsoft_driver = {
.name = "funsoft",
.probe = usb_serial_probe,
@@ -39,6 +62,7 @@ static struct usb_serial_driver funsoft_device = {
.num_bulk_in = NUM_DONT_CARE,
.num_bulk_out = NUM_DONT_CARE,
.num_ports = 1,
+ .ioctl = funsoft_ioctl,
};
static int __init funsoft_init(void)
@@ -63,3 +87,6 @@ static void __exit funsoft_exit(void)
module_init(funsoft_init);
module_exit(funsoft_exit);
MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
--
1.4.4.2
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
