diff options
Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
| -rw-r--r-- | drivers/isdn/gigaset/usb-gigaset.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index 76dbb20f306..4a66338f4e7 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -39,7 +39,8 @@ MODULE_PARM_DESC(cidmode, "Call-ID mode"); #define GIGASET_MODULENAME "usb_gigaset" #define GIGASET_DEVNAME "ttyGU" -#define IF_WRITEBUF 2000 /* arbitrary limit */ +/* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */ +#define IF_WRITEBUF 264 /* Values for the Gigaset M105 Data */ #define USB_M105_VENDOR_ID 0x0681 @@ -493,29 +494,13 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) } /* Send command to device. */ -static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, - int len, struct tasklet_struct *wake_tasklet) +static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb) { - struct cmdbuf_t *cb; unsigned long flags; gigaset_dbg_buffer(cs->mstate != MS_LOCKED ? DEBUG_TRANSCMD : DEBUG_LOCKCMD, - "CMD Transmit", len, buf); - - if (len <= 0) - return 0; - cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC); - if (!cb) { - dev_err(cs->dev, "%s: out of memory\n", __func__); - return -ENOMEM; - } - - memcpy(cb->buf, buf, len); - cb->len = len; - cb->offset = 0; - cb->next = NULL; - cb->wake_tasklet = wake_tasklet; + "CMD Transmit", cb->len, cb->buf); spin_lock_irqsave(&cs->cmdlock, flags); cb->prev = cs->lastcmdbuf; @@ -523,9 +508,9 @@ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, cs->lastcmdbuf->next = cb; else { cs->cmdbuf = cb; - cs->curlen = len; + cs->curlen = cb->len; } - cs->cmdbytes += len; + cs->cmdbytes += cb->len; cs->lastcmdbuf = cb; spin_unlock_irqrestore(&cs->cmdlock, flags); @@ -533,7 +518,7 @@ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, if (cs->connected) tasklet_schedule(&cs->write_tasklet); spin_unlock_irqrestore(&cs->lock, flags); - return len; + return cb->len; } static int gigaset_write_room(struct cardstate *cs) |