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authorTilman Schmidt <tilman@imap.cc>2006-04-10 22:55:00 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:18:49 -0700
commit917f5085ddb3498033551e711fb22f48ddeb8378 (patch)
treeff67547a8f4cbf27e4a30b795635778d8e6cc79d /drivers/isdn/gigaset/usb-gigaset.c
parent08a53cdce62d37d918530bbbf726cc01b21dc3d1 (diff)
downloadop-kernel-dev-917f5085ddb3498033551e711fb22f48ddeb8378.zip
op-kernel-dev-917f5085ddb3498033551e711fb22f48ddeb8378.tar.gz
[PATCH] isdn4linux: Siemens Gigaset drivers: code cleanup
With Hansjoerg Lipp <hjlipp@web.de> Source code formatting cleanups for the Siemens Gigaset drivers, such as line length, comments, removal of unused declarations, and typo corrections. It does not introduce any functional changes. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
-rw-r--r--drivers/isdn/gigaset/usb-gigaset.c129
1 files changed, 38 insertions, 91 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index 323fc73..0f5aa46 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -13,10 +13,6 @@
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* =====================================================================
- * ToDo: ...
- * =====================================================================
- * Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $
- * =====================================================================
*/
#include "gigaset.h"
@@ -62,10 +58,6 @@ static struct usb_device_id gigaset_table [] = {
MODULE_DEVICE_TABLE(usb, gigaset_table);
-/* Get a minor range for your devices from the usb maintainer */
-#define USB_SKEL_MINOR_BASE 200
-
-
/*
* Control requests (empty fields: 00)
*
@@ -122,29 +114,29 @@ static struct cardstate *cardstate = NULL;
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver gigaset_usb_driver = {
- .name = GIGASET_MODULENAME,
- .probe = gigaset_probe,
- .disconnect = gigaset_disconnect,
- .id_table = gigaset_table,
+ .name = GIGASET_MODULENAME,
+ .probe = gigaset_probe,
+ .disconnect = gigaset_disconnect,
+ .id_table = gigaset_table,
};
struct usb_cardstate {
- struct usb_device *udev; /* save off the usb device pointer */
- struct usb_interface *interface; /* the interface for this device */
- atomic_t busy; /* bulk output in progress */
-
- /* Output buffer for commands (M105: and data)*/
- unsigned char *bulk_out_buffer; /* the buffer to send data */
- int bulk_out_size; /* the size of the send buffer */
- __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
- struct urb *bulk_out_urb; /* the urb used to transmit data */
-
- /* Input buffer for command responses (M105: and data)*/
- int rcvbuf_size; /* the size of the receive buffer */
- struct urb *read_urb; /* the urb used to receive data */
- __u8 int_in_endpointAddr; /* the address of the bulk in endpoint */
-
- char bchars[6]; /* req. 0x19 */
+ struct usb_device *udev; /* usb device pointer */
+ struct usb_interface *interface; /* interface for this device */
+ atomic_t busy; /* bulk output in progress */
+
+ /* Output buffer */
+ unsigned char *bulk_out_buffer; /* send buffer */
+ int bulk_out_size; /* send buffer size */
+ __u8 bulk_out_endpointAddr; /* bulk out endpoint */
+ struct urb *bulk_out_urb; /* bulk out urb */
+
+ /* Input buffer */
+ int rcvbuf_size; /* rcv buffer */
+ struct urb *read_urb; /* rcv buffer size */
+ __u8 int_in_endpointAddr; /* int in endpoint */
+
+ char bchars[6]; /* request 0x19 */
};
struct usb_bc_state {};
@@ -166,10 +158,11 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
val = tiocm_to_gigaset(new_state);
dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask);
+ // don't use this in an interrupt/BH
r = usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41,
(val & 0xff) | ((mask & 0xff) << 8), 0,
- NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH
+ NULL, 0, 2000 /* timeout? */);
if (r < 0)
return r;
//..
@@ -309,15 +302,12 @@ static int gigaset_close_bchannel(struct bc_state *bcs)
return 0;
}
-//void send_ack_to_LL(void *data);
static int write_modem(struct cardstate *cs);
static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb);
-/* Handling of send queue. If there is already a skb opened, put data to
- * the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue.
- * This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler
- * via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data.
+/* Write tasklet handler: Continue sending current skb, or send command, or
+ * start sending an skb from the send queue.
*/
static void gigaset_modem_fill(unsigned long data)
{
@@ -345,7 +335,8 @@ static void gigaset_modem_fill(unsigned long data)
if (send_cb(cs, cb) < 0) {
dbg(DEBUG_OUTPUT,
"modem_fill: send_cb failed");
- again = 1; /* no callback will be called! */
+ again = 1; /* no callback will be
+ called! */
}
} else { /* skbs to send? */
bcs->tx_skb = skb_dequeue(&bcs->squeue);
@@ -371,8 +362,7 @@ static void gigaset_modem_fill(unsigned long data)
/**
* gigaset_read_int_callback
*
- * It is called if the data was received from the device. This is almost similiar to
- * the interrupt service routine in the serial device.
+ * It is called if the data was received from the device.
*/
static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
{
@@ -381,13 +371,11 @@ static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
struct cardstate *cs;
unsigned numbytes;
unsigned char *src;
- //unsigned long flags;
struct inbuf_t *inbuf;
IFNULLRET(urb);
inbuf = (struct inbuf_t *) urb->context;
IFNULLRET(inbuf);
- //spin_lock_irqsave(&inbuf->lock, flags);
cs = inbuf->cs;
IFNULLGOTO(cs, exit);
IFNULLGOTO(cardstate, exit);
@@ -422,7 +410,6 @@ static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
resubmit = 1;
}
exit:
- //spin_unlock_irqrestore(&inbuf->lock, flags);
if (resubmit) {
r = usb_submit_urb(urb, SLAB_ATOMIC);
if (r)
@@ -431,11 +418,7 @@ exit:
}
-/* This callback routine is called when data was transmitted to a B-Channel.
- * Therefore it has to check if there is still data to transmit. This
- * happens by calling modem_fill via task queue.
- *
- */
+/* This callback routine is called when data was transmitted to the device. */
static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
{
struct cardstate *cs = (struct cardstate *) urb->context;
@@ -448,8 +431,9 @@ static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
}
#endif
if (urb->status)
- err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems
- are handeled by timeouts or network protocols */
+ err("bulk transfer failed (status %d)", -urb->status);
+ /* That's all we can do. Communication problems
+ are handeled by timeouts or network protocols */
atomic_set(&cs->hw.usb->busy, 0);
tasklet_schedule(&cs->write_tasklet);
@@ -503,16 +487,16 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
atomic_set(&ucs->busy, 0);
err("could not submit urb (error %d).",
-status);
- cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */
+ cb->len = 0; /* skip urb => remove cb+wakeup
+ in next loop cycle */
}
}
- } while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */
+ } while (cb && status); /* next command on error */
return status;
}
-/* Write string into transbuf and send it to modem.
- */
+/* Send command to device. */
static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
int len, struct tasklet_struct *wake_tasklet)
{
@@ -604,7 +588,6 @@ static int gigaset_initbcshw(struct bc_state *bcs)
if (!bcs->hw.usb)
return 0;
- //bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */
return 1;
}
@@ -614,7 +597,6 @@ static void gigaset_reinitbcshw(struct bc_state *bcs)
static void gigaset_freecshw(struct cardstate *cs)
{
- //FIXME
tasklet_kill(&cs->write_tasklet);
kfree(cs->hw.usb);
}
@@ -644,19 +626,13 @@ static int gigaset_initcshw(struct cardstate *cs)
return 1;
}
-/* Writes the data of the current open skb into the modem.
- * We have to protect against multiple calls until the
- * callback handler () is called , due to the fact that we
- * are just allowed to send data once to an endpoint. Therefore
- * we using "trans_flg" to synchonize ...
- */
+/* Send data from current skb to the device. */
static int write_modem(struct cardstate *cs)
{
int ret;
int count;
struct bc_state *bcs = &cs->bcs[0]; /* only one channel */
struct usb_cardstate *ucs = cs->hw.usb;
- //unsigned long flags;
IFNULLRETVAL(bcs->tx_skb, -EINVAL);
@@ -720,12 +696,9 @@ static int gigaset_probe(struct usb_interface *interface,
struct usb_host_interface *hostif;
struct cardstate *cs = NULL;
struct usb_cardstate *ucs = NULL;
- //struct usb_interface_descriptor *iface_desc;
struct usb_endpoint_descriptor *endpoint;
- //isdn_ctrl command;
int buffer_size;
int alt;
- //unsigned long flags;
info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)",
__func__, le16_to_cpu(udev->descriptor.idVendor),
@@ -766,29 +739,6 @@ static int gigaset_probe(struct usb_interface *interface,
}
ucs = cs->hw.usb;
-#if 0
- if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) {
- warn("set_configuration failed");
- goto error;
- }
-
-
- if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) {
- warn("usb_set_interface failed, device %d interface %d altsetting %d",
- udev->devnum, ifnum, alt);
- goto error;
- }
-#endif
-
- /* set up the endpoint information */
- /* check out the endpoints */
- /* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to
- * poll messages from the device(int in).
- * Therefore we will have an almost similiar situation as with our serial port handler.
- * If an connection will be established, we will have to create data in/out pipes
- * dynamically...
- */
-
endpoint = &hostif->endpoint[0].desc;
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
@@ -896,18 +846,15 @@ static void gigaset_disconnect(struct usb_interface *interface)
tasklet_kill(&cs->write_tasklet);
- usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */
- //usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */
+ usb_kill_urb(ucs->bulk_out_urb); /* FIXME: only if active? */
kfree(ucs->bulk_out_buffer);
if (ucs->bulk_out_urb != NULL)
usb_free_urb(ucs->bulk_out_urb);
- //if(ucs->urb_cmd_out != NULL)
- // usb_free_urb(ucs->urb_cmd_out);
kfree(cs->inbuf[0].rcvbuf);
if (ucs->read_urb != NULL)
usb_free_urb(ucs->read_urb);
- ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL;
+ ucs->read_urb = ucs->bulk_out_urb = NULL;
cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
gigaset_unassign(cs);
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