#define USB_SX353_PRODUCT_ID 0x0022
/* table of devices that work with this driver */
-static const struct usb_device_id gigaset_table [] = {
+static const struct usb_device_id gigaset_table[] = {
{ USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3070_PRODUCT_ID) },
{ USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3075_PRODUCT_ID) },
{ USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX303_PRODUCT_ID) },
#define BS_RESETTING 0x200 /* waiting for HD_RESET_INTERRUPT_PIPE_ACK */
-static struct gigaset_driver *driver = NULL;
+static struct gigaset_driver *driver;
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver gigaset_usb_driver = {
ucs->dr_cmd_in.wLength = cpu_to_le16(ucs->rcvbuf_size);
usb_fill_control_urb(ucs->urb_cmd_in, ucs->udev,
usb_rcvctrlpipe(ucs->udev, 0),
- (unsigned char*) & ucs->dr_cmd_in,
+ (unsigned char *) &ucs->dr_cmd_in,
ucs->rcvbuf, ucs->rcvbuf_size,
read_ctrl_callback, cs->inbuf);
- if ((ret = usb_submit_urb(ucs->urb_cmd_in, GFP_ATOMIC)) != 0) {
+ ret = usb_submit_urb(ucs->urb_cmd_in, GFP_ATOMIC);
+ if (ret != 0) {
update_basstate(ucs, 0, BS_ATRDPEND);
dev_err(cs->dev, "could not submit HD_READ_ATMESSAGE: %s\n",
get_usb_rcmsg(ret));
return;
case -ENODEV: /* device removed */
case -ESHUTDOWN: /* device shut down */
- //FIXME use this as disconnect indicator?
gig_dbg(DEBUG_USBREQ, "%s: device disconnected", __func__);
return;
default: /* severe trouble */
dev_warn(cs->dev, "interrupt read: %s\n",
get_usb_statmsg(status));
- //FIXME corrective action? resubmission always ok?
goto resubmit;
}
kfree(ucs->rcvbuf);
ucs->rcvbuf_size = 0;
}
- if ((ucs->rcvbuf = kmalloc(l, GFP_ATOMIC)) == NULL) {
+ ucs->rcvbuf = kmalloc(l, GFP_ATOMIC);
+ if (ucs->rcvbuf == NULL) {
spin_unlock_irqrestore(&cs->lock, flags);
dev_err(cs->dev, "out of memory receiving AT data\n");
error_reset(cs);
}
ucs->rcvbuf_size = l;
ucs->retry_cmd_in = 0;
- if ((rc = atread_submit(cs, BAS_TIMEOUT)) < 0) {
+ rc = atread_submit(cs, BAS_TIMEOUT);
+ if (rc < 0) {
kfree(ucs->rcvbuf);
ucs->rcvbuf = NULL;
ucs->rcvbuf_size = 0;
if (rc != -ENODEV) {
- //FIXME corrective action?
spin_unlock_irqrestore(&cs->lock, flags);
error_reset(cs);
break;
}
dump_urb(DEBUG_ISO, "Initial isoc read", urb);
- if ((rc = usb_submit_urb(urb, GFP_ATOMIC)) != 0)
+ rc = usb_submit_urb(urb, GFP_ATOMIC);
+ if (rc != 0)
goto error;
}
/* compute frame length according to flow control */
ifd->length = BAS_NORMFRAME;
- if ((corrbytes = atomic_read(&ubc->corrbytes)) != 0) {
+ corrbytes = atomic_read(&ubc->corrbytes);
+ if (corrbytes != 0) {
gig_dbg(DEBUG_ISO, "%s: corrbytes=%d",
__func__, corrbytes);
if (corrbytes > BAS_HIGHFRAME - BAS_NORMFRAME)
for (;;) {
/* retrieve URB */
spin_lock_irqsave(&ubc->isoinlock, flags);
- if (!(urb = ubc->isoindone)) {
+ urb = ubc->isoindone;
+ if (!urb) {
spin_unlock_irqrestore(&ubc->isoinlock, flags);
return;
}
"isochronous read: %d data bytes missing\n",
totleft);
- error:
+error:
/* URB processed, resubmit */
for (frame = 0; frame < BAS_NUMFRAMES; frame++) {
urb->iso_frame_desc[frame].status = 0;
ucs->dr_ctrl.wLength = 0;
usb_fill_control_urb(ucs->urb_ctrl, ucs->udev,
usb_sndctrlpipe(ucs->udev, 0),
- (unsigned char*) &ucs->dr_ctrl, NULL, 0,
+ (unsigned char *) &ucs->dr_ctrl, NULL, 0,
write_ctrl_callback, ucs);
ucs->retry_ctrl = 0;
ret = usb_submit_urb(ucs->urb_ctrl, GFP_ATOMIC);
return -EHOSTUNREACH;
}
- if ((ret = starturbs(bcs)) < 0) {
+ ret = starturbs(bcs);
+ if (ret < 0) {
dev_err(cs->dev,
"could not start isochronous I/O for channel B%d: %s\n",
bcs->channel + 1,
}
req = bcs->channel ? HD_OPEN_B2CHANNEL : HD_OPEN_B1CHANNEL;
- if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) {
+ ret = req_submit(bcs, req, 0, BAS_TIMEOUT);
+ if (ret < 0) {
dev_err(cs->dev, "could not open channel B%d\n",
bcs->channel + 1);
stopurbs(bcs->hw.bas);
/* channel running: tell device to close it */
req = bcs->channel ? HD_CLOSE_B2CHANNEL : HD_CLOSE_B1CHANNEL;
- if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0)
+ ret = req_submit(bcs, req, 0, BAS_TIMEOUT);
+ if (ret < 0)
dev_err(cs->dev, "closing channel B%d failed\n",
bcs->channel + 1);
gig_dbg(DEBUG_TRANSCMD|DEBUG_LOCKCMD,
"write_command: sent %u bytes, %u left",
cs->curlen, cs->cmdbytes);
- if ((cs->cmdbuf = cb->next) != NULL) {
+ if (cb->next != NULL) {
+ cs->cmdbuf = cb->next;
cs->cmdbuf->prev = NULL;
cs->curlen = cs->cmdbuf->len;
} else {
+ cs->cmdbuf = NULL;
cs->lastcmdbuf = NULL;
cs->curlen = 0;
}
ucs->dr_cmd_out.wLength = cpu_to_le16(len);
usb_fill_control_urb(ucs->urb_cmd_out, ucs->udev,
usb_sndctrlpipe(ucs->udev, 0),
- (unsigned char*) &ucs->dr_cmd_out, buf, len,
+ (unsigned char *) &ucs->dr_cmd_out, buf, len,
write_command_callback, cs);
rc = usb_submit_urb(ucs->urb_cmd_out, GFP_ATOMIC);
if (unlikely(rc)) {
if (len > IF_WRITEBUF)
len = IF_WRITEBUF;
- if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) {
+ cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC);
+ if (!cb) {
dev_err(cs->dev, "%s: out of memory\n", __func__);
rc = -ENOMEM;
goto notqueued;
}
ubc->isooutdone = ubc->isooutfree = ubc->isooutovfl = NULL;
ubc->numsub = 0;
- if (!(ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL))) {
+ ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL);
+ if (!ubc->isooutbuf) {
pr_err("out of memory\n");
kfree(ubc);
bcs->hw.bas = NULL;
gig_dbg(DEBUG_ANY,
"%s: wrong alternate setting %d - trying to switch",
__func__, hostif->desc.bAlternateSetting);
- if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3) < 0) {
+ if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3)
+ < 0) {
dev_warn(&udev->dev, "usb_set_interface failed, "
"device %d interface %d altsetting %d\n",
udev->devnum, hostif->desc.bInterfaceNumber,
(endpoint->bEndpointAddress) & 0x0f),
ucs->int_in_buf, IP_MSGSIZE, read_int_callback, cs,
endpoint->bInterval);
- if ((rc = usb_submit_urb(ucs->urb_int_in, GFP_KERNEL)) != 0) {
+ rc = usb_submit_urb(ucs->urb_int_in, GFP_KERNEL);
+ if (rc != 0) {
dev_err(cs->dev, "could not submit interrupt URB: %s\n",
get_usb_rcmsg(rc));
goto error;
}
/* tell the device that the driver is ready */
- if ((rc = req_submit(cs->bcs, HD_DEVICE_INIT_ACK, 0, 0)) != 0)
+ rc = req_submit(cs->bcs, HD_DEVICE_INIT_ACK, 0, 0);
+ if (rc != 0)
goto error;
/* tell common part that the device is ready */
int result;
/* allocate memory for our driver state and intialize it */
- if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
- GIGASET_MODULENAME, GIGASET_DEVNAME,
- &gigops, THIS_MODULE)) == NULL)
+ driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
+ GIGASET_MODULENAME, GIGASET_DEVNAME,
+ &gigops, THIS_MODULE);
+ if (driver == NULL)
goto error;
/* register this driver with the USB subsystem */
read = iwb->read;
write = iwb->write;
- if ((freebytes = read - write) > 0) {
+ freebytes = read - write;
+ if (freebytes > 0) {
/* no wraparound: need padding space within regular area */
return freebytes - BAS_OUTBUFPAD;
} else if (read < BAS_OUTBUFPAD) {
}
}
-/* compare two offsets within the buffer
- * The buffer is seen as circular, with the read position as start
- * returns -1/0/1 if position a </=/> position b without crossing 'read'
- */
-static inline int isowbuf_poscmp(struct isowbuf_t *iwb, int a, int b)
-{
- int read;
- if (a == b)
- return 0;
- read = iwb->read;
- if (a < b) {
- if (a < read && read <= b)
- return +1;
- else
- return -1;
- } else {
- if (b < read && read <= a)
- return -1;
- else
- return +1;
- }
-}
-
/* start writing
* acquire the write semaphore
* return true if acquired, false if busy
* bit 14..13 = number of bits added by stuffing
*/
static const u16 stufftab[5 * 256] = {
-// previous 1s = 0:
+/* previous 1s = 0: */
0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x201f,
0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x0ce7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x0cef,
0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x10f7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x2ddf,
-// previous 1s = 1:
+/* previous 1s = 1: */
0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x200f,
0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x202f,
0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x204f,
0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x0ce7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x2dcf,
0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x10f7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x31ef,
-// previous 1s = 2:
+/* previous 1s = 2: */
0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x2007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x2017,
0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x2027, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x2037,
0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x2047, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x2057,
0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x2dc7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x2dd7,
0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x31e7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x41f7,
-// previous 1s = 3:
+/* previous 1s = 3: */
0x0000, 0x0001, 0x0002, 0x2003, 0x0004, 0x0005, 0x0006, 0x200b, 0x0008, 0x0009, 0x000a, 0x2013, 0x000c, 0x000d, 0x000e, 0x201b,
0x0010, 0x0011, 0x0012, 0x2023, 0x0014, 0x0015, 0x0016, 0x202b, 0x0018, 0x0019, 0x001a, 0x2033, 0x001c, 0x001d, 0x001e, 0x203b,
0x0020, 0x0021, 0x0022, 0x2043, 0x0024, 0x0025, 0x0026, 0x204b, 0x0028, 0x0029, 0x002a, 0x2053, 0x002c, 0x002d, 0x002e, 0x205b,
0x0ce0, 0x0ce1, 0x0ce2, 0x2dc3, 0x0ce4, 0x0ce5, 0x0ce6, 0x2dcb, 0x0ce8, 0x0ce9, 0x0cea, 0x2dd3, 0x0cec, 0x0ced, 0x0cee, 0x2ddb,
0x10f0, 0x10f1, 0x10f2, 0x31e3, 0x10f4, 0x10f5, 0x10f6, 0x31eb, 0x20f8, 0x20f9, 0x20fa, 0x41f3, 0x257c, 0x257d, 0x29be, 0x46fb,
-// previous 1s = 4:
+/* previous 1s = 4: */
0x0000, 0x2001, 0x0002, 0x2005, 0x0004, 0x2009, 0x0006, 0x200d, 0x0008, 0x2011, 0x000a, 0x2015, 0x000c, 0x2019, 0x000e, 0x201d,
0x0010, 0x2021, 0x0012, 0x2025, 0x0014, 0x2029, 0x0016, 0x202d, 0x0018, 0x2031, 0x001a, 0x2035, 0x001c, 0x2039, 0x001e, 0x203d,
0x0020, 0x2041, 0x0022, 0x2045, 0x0024, 0x2049, 0x0026, 0x204d, 0x0028, 0x2051, 0x002a, 0x2055, 0x002c, 0x2059, 0x002e, 0x205d,
* parameters:
* cin input byte
* ones number of trailing '1' bits in result before this step
- * iwb pointer to output buffer structure (write semaphore must be held)
+ * iwb pointer to output buffer structure
+ * (write semaphore must be held)
* return value:
* number of trailing '1' bits in result after this step
*/
* parameters:
* in input buffer
* count number of bytes in input buffer
- * iwb pointer to output buffer structure (write semaphore must be held)
+ * iwb pointer to output buffer structure
+ * (write semaphore must be held)
* return value:
* position of end of packet in output buffer on success,
* -EAGAIN if write semaphore busy or buffer full
fcs = crc_ccitt_byte(fcs, c);
}
- /* bitstuff and append FCS (complemented, least significant byte first) */
+ /* bitstuff and append FCS
+ * (complemented, least significant byte first) */
fcs ^= 0xffff;
ones = hdlc_bitstuff_byte(iwb, fcs & 0x00ff, ones);
ones = hdlc_bitstuff_byte(iwb, (fcs >> 8) & 0x00ff, ones);
* parameters:
* in input buffer
* count number of bytes in input buffer
- * iwb pointer to output buffer structure (write semaphore must be held)
+ * iwb pointer to output buffer structure
+ * (write semaphore must be held)
* return value:
* position of end of packet in output buffer on success,
* -EAGAIN if write semaphore busy or buffer full
hdlc_flush(bcs);
return;
}
-
- if ((procskb = bcs->skb) == NULL) {
+ procskb = bcs->skb;
+ if (procskb == NULL) {
/* previous error */
gig_dbg(DEBUG_ISO, "%s: skb=NULL", __func__);
gigaset_isdn_rcv_err(bcs);
};
/* hdlc_unpack
- * perform HDLC frame processing (bit unstuffing, flag detection, FCS calculation)
- * on a sequence of received data bytes (8 bits each, LSB first)
+ * perform HDLC frame processing (bit unstuffing, flag detection, FCS
+ * calculation) on a sequence of received data bytes (8 bits each, LSB first)
* pass on successfully received, complete frames as SKBs via gigaset_skb_rcvd
* notify of errors via gigaset_isdn_rcv_err
* tally frames, errors etc. in BC structure counters
/* load previous state:
* inputstate = set of flag bits:
- * - INS_flag_hunt: no complete opening flag received since connection setup or last abort
- * - INS_have_data: at least one complete data byte received since last flag
- * seqlen = number of consecutive '1' bits in last 7 input stream bits (0..7)
+ * - INS_flag_hunt: no complete opening flag received since connection
+ * setup or last abort
+ * - INS_have_data: at least one complete data byte received since last
+ * flag
+ * seqlen = number of consecutive '1' bits in last 7 input stream bits
+ * (0..7)
* inbyte = accumulated partial data byte (if !INS_flag_hunt)
* inbits = number of valid bits in inbyte, starting at LSB (0..6)
*/
inbyte = c >> (lead1 + 1);
inbits = 7 - lead1;
if (trail1 >= 8) {
- /* interior stuffing: omitting the MSB handles most cases */
+ /* interior stuffing:
+ * omitting the MSB handles most cases,
+ * correct the incorrectly handled
+ * cases individually */
inbits--;
- /* correct the incorrectly handled cases individually */
switch (c) {
case 0xbe:
inbyte = 0x3f;
hdlc_flush(bcs);
inputstate |= INS_flag_hunt;
} else if (seqlen == 6) {
- /* closing flag, including (6 - lead1) '1's and one '0' from inbits */
+ /* closing flag, including (6 - lead1) '1's
+ * and one '0' from inbits */
if (inbits > 7 - lead1) {
hdlc_frag(bcs, inbits + lead1 - 7);
inputstate &= ~INS_have_data;
} else {
if (inbits < 7 - lead1)
- ubc->stolen0s ++;
+ ubc->stolen0s++;
if (inputstate & INS_have_data) {
hdlc_done(bcs);
inputstate &= ~INS_have_data;
if (c == PPP_FLAG) {
/* complete flag, LSB overlaps preceding flag */
- ubc->shared0s ++;
+ ubc->shared0s++;
inbits = 0;
inbyte = 0;
} else if (trail1 != 7) {
inbyte = c >> (lead1 + 1);
inbits = 7 - lead1;
if (trail1 >= 8) {
- /* interior stuffing: omitting the MSB handles most cases */
+ /* interior stuffing:
+ * omitting the MSB handles most cases,
+ * correct the incorrectly handled
+ * cases individually */
inbits--;
- /* correct the incorrectly handled cases individually */
switch (c) {
case 0xbe:
inbyte = 0x3f;
}
}
} else {
- /* abort sequence follows, skb already empty anyway */
+ /* abort sequence follows,
+ * skb already empty anyway */
ubc->aborts++;
inputstate |= INS_flag_hunt;
}
} else {
/* stuffed data */
if (trail1 < 7) { /* => seqlen == 5 */
- /* stuff bit at position lead1, no interior stuffing */
+ /* stuff bit at position lead1,
+ * no interior stuffing */
unsigned char mask = (1 << lead1) - 1;
c = (c & mask) | ((c & ~mask) >> 1);
inbyte |= c << inbits;
inbits += 7;
} else if (seqlen < 5) { /* trail1 >= 8 */
- /* interior stuffing: omitting the MSB handles most cases */
- /* correct the incorrectly handled cases individually */
+ /* interior stuffing:
+ * omitting the MSB handles most cases,
+ * correct the incorrectly handled
+ * cases individually */
switch (c) {
case 0xbe:
c = 0x7e;
inbits += 7;
} else { /* seqlen == 5 && trail1 >= 8 */
- /* stuff bit at lead1 *and* interior stuffing */
- switch (c) { /* unstuff individually */
+ /* stuff bit at lead1 *and* interior
+ * stuffing -- unstuff individually */
+ switch (c) {
case 0x7d:
c = 0x3f;
break;
hdlc_flush(bcs);
return;
}
- if (unlikely((skb = bcs->skb) == NULL)) {
+ skb = bcs->skb;
+ if (unlikely(skb == NULL)) {
bcs->skb = skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
if (!skb) {
dev_err(cs->dev, "could not allocate skb\n");
}
}
-void gigaset_isoc_receive(unsigned char *src, unsigned count, struct bc_state *bcs)
+void gigaset_isoc_receive(unsigned char *src, unsigned count,
+ struct bc_state *bcs)
{
switch (bcs->proto2) {
case L2_HDLC:
git.openpandora.org / pandora-kernel.git / commitdiff