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Message-ID: <20090514-patch-07.tilman@imap.cc>
Date: Thu, 14 May 2009 00:44:18 +0200 (CEST)
From: Tilman Schmidt <tilman@...p.cc>
To: davem@...emloft.net, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
CC: Hansjoerg Lipp <hjlipp@....de>
Subject: [PATCH 7/8] gigaset: remove UNDOCREQ config option
Drop the kernel config option GIGASET_UNDOCREQ, permanently
activating the code it controlled, as there have been no reports
of problems caused by its activation but many problems caused by
it being disabled.
Also fix a few bad comments while we're at it.
Impact: cleanup
Signed-off-by: Tilman Schmidt <tilman@...p.cc>
---
Documentation/isdn/README.gigaset | 33 +++----------------
drivers/isdn/gigaset/Kconfig | 7 ----
drivers/isdn/gigaset/usb-gigaset.c | 62 +++++++++++++----------------------
3 files changed, 28 insertions(+), 74 deletions(-)
diff --git a/Documentation/isdn/README.gigaset b/Documentation/isdn/README.gigaset
index f6e9eaa..f996310 100644
--- a/Documentation/isdn/README.gigaset
+++ b/Documentation/isdn/README.gigaset
@@ -149,10 +149,8 @@ GigaSet 307x Device Driver
configuration files and chat scripts in the gigaset-VERSION/ppp directory
in the driver packages from http://sourceforge.net/projects/gigaset307x/.
Please note that the USB drivers are not able to change the state of the
- control lines (the M105 driver can be configured to use some undocumented
- control requests, if you really need the control lines, though). This means
- you must use "Stupid Mode" if you are using wvdial or you should use the
- nocrtscts option of pppd.
+ control lines. This means you must use "Stupid Mode" if you are using
+ wvdial or you should use the nocrtscts option of pppd.
You must also assure that the ppp_async module is loaded with the parameter
flag_time=0. You can do this e.g. by adding a line like
@@ -190,20 +188,7 @@ GigaSet 307x Device Driver
You can also use /sys/class/tty/ttyGxy/cidmode for changing the CID mode
setting (ttyGxy is ttyGU0 or ttyGB0).
-2.6. M105 Undocumented USB Requests
- ------------------------------
- The Gigaset M105 USB data box understands a couple of useful, but
- undocumented USB commands. These requests are not used in normal
- operation (for wireless access to the base), but are needed for access
- to the M105's own configuration mode (registration to the base, baudrate
- and line format settings, device status queries) via the gigacontr
- utility. Their use is controlled by the kernel configuration option
- "Support for undocumented USB requests" (CONFIG_GIGASET_UNDOCREQ). If you
- encounter error code -ENOTTY when trying to use some features of the
- M105, try setting that option to "y" via 'make {x,menu}config' and
- recompiling the driver.
-
-2.7. Unregistered Wireless Devices (M101/M105)
+2.6. Unregistered Wireless Devices (M101/M105)
-----------------------------------------
The main purpose of the ser_gigaset and usb_gigaset drivers is to allow
the M101 and M105 wireless devices to be used as ISDN devices for ISDN
@@ -215,8 +200,7 @@ GigaSet 307x Device Driver
driver. In that situation, a restricted set of functions is available
which includes, in particular, those necessary for registering the device
to a base or for switching it between Fixed Part and Portable Part
- modes. For the M105, these commands require the "Support for undocumented
- USB requests" configuration option (see section 2.6.) to be enabled.
+ modes.
3. Troubleshooting
---------------
@@ -247,19 +231,12 @@ GigaSet 307x Device Driver
Select Unimodem mode for all DECT data adapters. (see section 2.4.)
Problem:
- You want to configure your USB DECT data adapter (M105) but gigacontr
- reports an error: "/dev/ttyGU0: Inappropriate ioctl for device".
- Solution:
- Recompile the usb_gigaset driver with the kernel configuration option
- CONFIG_GIGASET_UNDOCREQ set to 'y'. (see section 2.6.)
-
- Problem:
Messages like this:
usb_gigaset 3-2:1.0: Could not initialize the device.
appear in your syslog.
Solution:
Check whether your M10x wireless device is correctly registered to the
- Gigaset base. (see section 2.7.)
+ Gigaset base. (see section 2.6.)
3.2. Telling the driver to provide more information
----------------------------------------------
diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig
index 9ca889a..65ca305 100644
--- a/drivers/isdn/gigaset/Kconfig
+++ b/drivers/isdn/gigaset/Kconfig
@@ -42,11 +42,4 @@ config GIGASET_DEBUG
This enables debugging code in the Gigaset drivers.
If in doubt, say yes.
-config GIGASET_UNDOCREQ
- bool "Support for undocumented USB requests"
- help
- This enables support for USB requests we only know from
- reverse engineering (currently M105 only). If you need
- features like configuration mode of M105, say yes.
-
endif # ISDN_DRV_GIGASET
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index d783851..4deb1ab 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -153,8 +153,6 @@ static inline unsigned tiocm_to_gigaset(unsigned state)
return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0);
}
-#ifdef CONFIG_GIGASET_UNDOCREQ
-/* WARNING: EXPERIMENTAL! */
static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
unsigned new_state)
{
@@ -176,6 +174,11 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
return 0;
}
+/*
+ * Set M105 configuration value
+ * using undocumented device commands reverse engineered from USB traces
+ * of the Siemens Windows driver
+ */
static int set_value(struct cardstate *cs, u8 req, u16 val)
{
struct usb_device *udev = cs->hw.usb->udev;
@@ -205,8 +208,10 @@ static int set_value(struct cardstate *cs, u8 req, u16 val)
return r < 0 ? r : (r2 < 0 ? r2 : 0);
}
-/* WARNING: HIGHLY EXPERIMENTAL! */
-// don't use this in an interrupt/BH
+/*
+ * set the baud rate on the internal serial adapter
+ * using the undocumented parameter setting command
+ */
static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
{
u16 val;
@@ -237,8 +242,10 @@ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
return set_value(cs, 1, val);
}
-/* WARNING: HIGHLY EXPERIMENTAL! */
-// don't use this in an interrupt/BH
+/*
+ * set the line format on the internal serial adapter
+ * using the undocumented parameter setting command
+ */
static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
{
u16 val = 0;
@@ -274,24 +281,6 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
return set_value(cs, 3, val);
}
-#else
-static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
- unsigned new_state)
-{
- return -ENOTTY;
-}
-
-static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
-{
- return -ENOTTY;
-}
-
-static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
-{
- return -ENOTTY;
-}
-#endif
-
/*================================================================================================================*/
static int gigaset_init_bchannel(struct bc_state *bcs)
@@ -362,10 +351,8 @@ static void gigaset_modem_fill(unsigned long data)
} while (again);
}
-/**
- * gigaset_read_int_callback
- *
- * It is called if the data was received from the device.
+/*
+ * Interrupt Input URB completion routine
*/
static void gigaset_read_int_callback(struct urb *urb)
{
@@ -567,18 +554,19 @@ static int gigaset_chars_in_buffer(struct cardstate *cs)
return cs->cmdbytes;
}
+/*
+ * set the break characters on the internal serial adapter
+ * using undocumented device commands reverse engineered from USB traces
+ * of the Siemens Windows driver
+ */
static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
{
-#ifdef CONFIG_GIGASET_UNDOCREQ
struct usb_device *udev = cs->hw.usb->udev;
gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf);
memcpy(cs->hw.usb->bchars, buf, 6);
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
0, 0, &buf, 6, 2000);
-#else
- return -ENOTTY;
-#endif
}
static int gigaset_freebcshw(struct bc_state *bcs)
@@ -625,7 +613,6 @@ static int gigaset_initcshw(struct cardstate *cs)
ucs->bchars[5] = 0x13;
ucs->bulk_out_buffer = NULL;
ucs->bulk_out_urb = NULL;
- //ucs->urb_cmd_out = NULL;
ucs->read_urb = NULL;
tasklet_init(&cs->write_tasklet,
&gigaset_modem_fill, (unsigned long) cs);
@@ -742,7 +729,7 @@ static int gigaset_probe(struct usb_interface *interface,
cs->dev = &interface->dev;
/* save address of controller structure */
- usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs);
+ usb_set_intfdata(interface, cs);
endpoint = &hostif->endpoint[0].desc;
@@ -921,8 +908,7 @@ static const struct gigaset_ops ops = {
gigaset_m10x_input,
};
-/**
- * usb_gigaset_init
+/*
* This function is called while kernel-module is loaded
*/
static int __init usb_gigaset_init(void)
@@ -952,9 +938,7 @@ error:
return -1;
}
-
-/**
- * usb_gigaset_exit
+/*
* This function is called while unloading the kernel-module
*/
static void __exit usb_gigaset_exit(void)
--
1.6.2.1.214.ge986c
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