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Date: Wed, 16 Apr 2008 14:28:17 +0200
From: Oliver Neukum <oliver@...kum.org>
To: Paulius Zaleckas <paulius.zaleckas@...tonika.lt>,
linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: remove special ioctl from hso driver, replace by rfkill
Hi,
could you test this patch?
It does away with the one off serial ioctl replacing it with a standard
mechanism.
Regards
Oliver
---
--- linux-2.6.25-hso/drivers/net/usb/hso.c.alt2 2008-04-16 07:24:18.000000000 +0200
+++ linux-2.6.25-hso/drivers/net/usb/hso.c 2008-04-16 14:01:22.000000000 +0200
@@ -57,6 +58,7 @@
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/kmod.h>
+#include <linux/rfkill.h>
#include <linux/ip.h>
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
@@ -102,7 +104,6 @@
#define HSO_SERIAL_FLAG_THROTTLED 0
#define HSO_SERIAL_FLAG_TX_SENT 1
#define HSO_SERIAL_FLAG_RX_SENT 2
-#define HSO_SERIAL_USB_GONE 3
#define HSO_SERIAL_MAGIC 0x48534f31
@@ -241,11 +242,13 @@ struct hso_device {
u8 is_active;
u8 suspend_disabled;
+ u8 usb_gone;
struct work_struct async_get_intf;
struct work_struct async_put_intf;
struct usb_device *usb;
struct usb_interface *interface;
+ struct rfkill *rfkill;
struct device *dev;
struct kref ref; */
@@ -1238,7 +1216,7 @@ static void hso_serial_close(struct tty_
}
mutex_lock(&serial->parent->mutex);
- usb_gone = test_bit(HSO_SERIAL_USB_GONE, &serial->flags);
+ usb_gone = serial->parent->usb_gone;
if (!usb_gone)
usb_autopm_get_interface(serial->parent->interface);
@@ -1407,43 +1385,6 @@ static int hso_serial_tiocmset(struct tt
USB_CTRL_SET_TIMEOUT);
}
-/* Toggles radio on or off ( used by ioctl ) */
-static int hso_set_radio(struct hso_device *hso_dev, int enabled)
-{
- if (!hso_dev)
- return -ENODEV;
-
- return usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
- enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
- USB_CTRL_SET_TIMEOUT);
-}
-
-/* ioctl not supported */
-static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct hso_serial *serial = get_serial_by_tty(tty);
- int ret = 0;
- D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
-
- if (!serial)
- return -ENODEV;
-
- switch (cmd) {
- case SIOCSETRADIO:
- if (arg)
- hso_set_radio(serial->parent, 1);
- else
- hso_set_radio(serial->parent, 0);
- ret = 0;
- break;
- default:
- ret = -ENOIOCTLCMD;
- break;
- }
- return ret;
-}
-
/* starts a transmit */
static void hso_kick_transmit(struct hso_serial *serial)
{
@@ -1871,7 +1812,6 @@ static struct tty_operations hso_serial_
.close = hso_serial_close,
.write = hso_serial_write,
.write_room = hso_serial_write_room,
- .ioctl = hso_serial_ioctl,
.set_termios = hso_serial_set_termios,
.chars_in_buffer = hso_serial_chars_in_buffer,
.tiocmget = hso_serial_tiocmget,
@@ -2669,12 +2610,30 @@ static int hso_get_config_data(struct us
return result;
}
+static int hso_radio_toggle(void *data, enum rfkill_state state)
+{
+ struct hso_device *hso_dev = data;
+ int enabled = (state == RFKILL_STATE_ON);
+ int rv;
+
+ mutex_lock(&hso_dev->mutex);
+ if (hso_dev->usb_gone)
+ rv = 0;
+ else
+ rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
+ enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+ mutex_unlock(&hso_dev->mutex);
+ return rv;
+}
+
/* called once for each interface upon device insertion */
static int hso_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
int mux, i, if_num, port_spec;
unsigned char port_mask;
+ char *rfkn;
struct hso_device *hso_dev = NULL;
struct hso_shared_int *shared_int = NULL;
struct hso_device *tmp_dev = NULL;
@@ -2747,6 +2706,27 @@ static int hso_probe(struct usb_interfac
goto exit;
}
+ hso_dev->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev,
+ RFKILL_TYPE_WLAN);
+ if (!hso_dev->rfkill)
+ goto exit;
+ rfkn = kzalloc(20, GFP_KERNEL);
+ if (!rfkn) {
+ rfkill_free(hso_dev->rfkill);
+ goto exit;
+ }
+ snprintf(rfkn, 20, "hso-%d", if_num);
+ hso_dev->rfkill->name = rfkn;
+ hso_dev->rfkill->state = RFKILL_STATE_ON;
+ hso_dev->rfkill->data = hso_dev;
+ hso_dev->rfkill->toggle_radio = hso_radio_toggle;
+ if (rfkill_register(hso_dev->rfkill) < 0) {
+ kfree(rfkn);
+ hso_dev->rfkill->name = NULL;
+ rfkill_free(hso_dev->rfkill);
+ goto exit;
+ }
+
usb_driver_claim_interface(&hso_driver, interface, hso_dev);
/* save our data pointer in this device */
@@ -2768,8 +2748,16 @@ exit:
/* device removed, cleaning up */
static void hso_disconnect(struct usb_interface *interface)
{
+ struct hso_device *hso_dev = usb_get_intfdata(interface);
+
hso_free_interface(interface);
+ if (hso_dev) {
+ cancel_work_sync(&hso_dev->async_put_intf);
+ cancel_work_sync(&hso_dev->async_get_intf);
+ rfkill_unregister(hso_dev->rfkill);
+ }
+
/* remove reference of our private data */
usb_set_intfdata(interface, NULL);
@@ -2909,7 +2897,7 @@ static void hso_free_interface(struct us
if (hso_dev->tty)
tty_hangup(hso_dev->tty);
mutex_lock(&hso_dev->parent->mutex);
- set_bit(HSO_SERIAL_USB_GONE, &hso_dev->flags);
+ hso_dev->parent->usb_gone = 1;
mutex_unlock(&hso_dev->parent->mutex);
kref_put(&serial_table[i]->ref, hso_serial_ref_free);
}
--
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