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tty: make tty_operations::write()'s count size_t

Browse Source 
Unify with the rest of the code. Use size_t for counts and ssize_t for
retval.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230810091510.13006-30-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE) 2023-08-10 11:15:03 +02:00 committed by Greg Kroah-Hartman
parent dcaafbe6ee
commit 95713967ba
43 changed files with 82 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/alpha/kernel/srmcons.c
View File

@ -129,8 +129,8 @@ srmcons_do_write(struct tty_port *port, const char *buf, int count)
return count;
}
static int
srmcons_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t
srmcons_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
unsigned long flags;

3
arch/m68k/emu/nfcon.c
View File

@ -70,7 +70,8 @@ static void nfcon_tty_close(struct tty_struct *tty, struct file *filp)
{
}
static int nfcon_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t nfcon_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
nfputs(buf, count);
return count;

2
arch/um/drivers/line.c
View File

@ -184,7 +184,7 @@ void line_flush_chars(struct tty_struct *tty)
line_flush_buffer(tty);
}
int line_write(struct tty_struct *tty, const u8 *buf, int len)
ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len)
{
struct line *line = tty->driver_data;
unsigned long flags;

2
arch/um/drivers/line.h
View File

@ -64,7 +64,7 @@ extern void line_cleanup(struct tty_struct *tty);
extern void line_hangup(struct tty_struct *tty);
extern int line_setup(char **conf, unsigned nlines, char **def,
char *init, char *name);
extern int line_write(struct tty_struct *tty, const u8 *buf, int len);
extern ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len);
extern unsigned int line_chars_in_buffer(struct tty_struct *tty);
extern void line_flush_buffer(struct tty_struct *tty);
extern void line_flush_chars(struct tty_struct *tty);

2
arch/xtensa/platforms/iss/console.c
View File

@ -52,7 +52,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
static int rs_write(struct tty_struct * tty, const u8 *buf, int count)
static ssize_t rs_write(struct tty_struct * tty, const u8 *buf, size_t count)
{
/* see drivers/char/serialX.c to reference original version */

2
drivers/char/ttyprintk.c
View File

@ -103,7 +103,7 @@ static void tpk_close(struct tty_struct *tty, struct file *filp)
/*
* TTY operations write function.
*/
static int tpk_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t tpk_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct ttyprintk_port *tpkp = tty->driver_data;
unsigned long flags;

3
drivers/ipack/devices/ipoctal.c
View File

@ -458,7 +458,8 @@ static inline int ipoctal_copy_write_buffer(struct ipoctal_channel *channel,
return i;
}
static int ipoctal_write_tty(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t ipoctal_write_tty(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct ipoctal_channel *channel = tty->driver_data;
unsigned int char_copied;

5
drivers/isdn/capi/capi.c
View File

@ -1077,12 +1077,13 @@ static void capinc_tty_close(struct tty_struct *tty, struct file *filp)
tty_port_close(&mp->port, tty, filp);
}
static int capinc_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t capinc_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct capiminor *mp = tty->driver_data;
struct sk_buff *skb;
pr_debug("capinc_tty_write(count=%d)\n", count);
pr_debug("capinc_tty_write(count=%zu)\n", count);
spin_lock_bh(&mp->outlock);
skb = mp->outskb;

3
drivers/misc/bcm-vk/bcm_vk_tty.c
View File

@ -186,7 +186,8 @@ static void bcm_vk_tty_doorbell(struct bcm_vk *vk, u32 db_val)
VK_BAR0_REGSEG_DB_BASE + VK_BAR0_REGSEG_TTY_DB_OFFSET);
}
static int bcm_vk_tty_write(struct tty_struct *tty, const u8 *buffer, int count)
static ssize_t bcm_vk_tty_write(struct tty_struct *tty, const u8 *buffer,
size_t count)
{
int index;
struct bcm_vk *vk;

3
drivers/mmc/core/sdio_uart.c
View File

@ -760,7 +760,8 @@ static void sdio_uart_hangup(struct tty_struct *tty)
tty_port_hangup(&port->port);
}
static int sdio_uart_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t sdio_uart_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct sdio_uart_port *port = tty->driver_data;
int ret;

3
drivers/net/usb/hso.c
View File

@ -1322,7 +1322,8 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp)
}
/* close the requested serial port */
static int hso_serial_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t hso_serial_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct hso_serial *serial = tty->driver_data;
int space, tx_bytes;

3
drivers/s390/char/con3215.c
View File

@ -1021,7 +1021,8 @@ static unsigned int tty3215_write_room(struct tty_struct *tty)
/*
* String write routine for 3215 ttys
*/
static int tty3215_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t tty3215_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
handle_write(tty->driver_data, buf, count);
return count;

3
drivers/s390/char/con3270.c
View File

@ -1803,7 +1803,8 @@ static void tty3270_do_write(struct tty3270 *tp, struct tty_struct *tty,
/*
* String write routine for 3270 ttys
*/
static int tty3270_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t tty3270_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct tty3270 *tp;

4
drivers/s390/char/sclp_tty.c
View File

@ -229,8 +229,8 @@ out:
* tty device. The characters may come from user space or kernel space. This
* routine will return the number of characters actually accepted for writing.
*/
static int
sclp_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t
sclp_tty_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
if (sclp_tty_chars_count > 0) {
sclp_tty_write_string(sclp_tty_chars, sclp_tty_chars_count, 0);

4
drivers/s390/char/sclp_vt220.c
View File

@ -462,8 +462,8 @@ out:
* user space or kernel space. This routine will return the
* number of characters actually accepted for writing.
*/
static int
sclp_vt220_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t
sclp_vt220_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
return __sclp_vt220_write(buf, count, 1, 0, 1);
}

2
drivers/staging/gdm724x/gdm_tty.c
View File

@ -149,7 +149,7 @@ static void gdm_tty_send_complete(void *arg)
tty_port_tty_wakeup(&gdm->port);
}
static int gdm_tty_write(struct tty_struct *tty, const u8 *buf, int len)
static ssize_t gdm_tty_write(struct tty_struct *tty, const u8 *buf, size_t len)
{
struct gdm *gdm = tty->driver_data;
int remain = len;

2
drivers/staging/greybus/uart.c
View File

@ -427,7 +427,7 @@ static void gb_tty_hangup(struct tty_struct *tty)
tty_port_hangup(&gb_tty->port);
}
static int gb_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t gb_tty_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct gb_tty *gb_tty = tty->driver_data;

2
drivers/tty/amiserial.c
View File

@ -741,7 +741,7 @@ static void rs_flush_chars(struct tty_struct *tty)
local_irq_restore(flags);
}
static int rs_write(struct tty_struct * tty, const u8 *buf, int count)
static ssize_t rs_write(struct tty_struct * tty, const u8 *buf, size_t count)
{
int c, ret = 0;
struct serial_state *info = tty->driver_data;

3
drivers/tty/ehv_bytechan.c
View File

@ -466,7 +466,8 @@ static irqreturn_t ehv_bc_tty_tx_isr(int irq, void *data)
* ehv_bc_tty_write_room() will never lie, so the tty layer will never send us
* too much data.
*/
static int ehv_bc_tty_write(struct tty_struct *ttys, const u8 *s, int count)
static ssize_t ehv_bc_tty_write(struct tty_struct *ttys, const u8 *s,
size_t count)
{
struct ehv_bc_data *bc = ttys->driver_data;
unsigned long flags;

3
drivers/tty/goldfish.c
View File

@ -185,7 +185,8 @@ static void goldfish_tty_hangup(struct tty_struct *tty)
tty_port_hangup(tty->port);
}
static int goldfish_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t goldfish_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
goldfish_tty_do_write(tty->index, buf, count);
return count;

2
drivers/tty/hvc/hvc_console.c
View File

@ -496,7 +496,7 @@ static int hvc_push(struct hvc_struct *hp)
return n;
}
static int hvc_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t hvc_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct hvc_struct *hp = tty->driver_data;
unsigned long flags;

5
drivers/tty/hvc/hvcs.c
View File

@ -1257,7 +1257,7 @@ static void hvcs_hangup(struct tty_struct * tty)
* tty_hangup will allow hvcs_write time to complete execution before it
* terminates our device.
*/
static int hvcs_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t hvcs_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct hvcs_struct *hvcsd = tty->driver_data;
unsigned int unit_address;
@ -1299,7 +1299,8 @@ static int hvcs_write(struct tty_struct *tty, const u8 *buf, int count)
unit_address = hvcsd->vdev->unit_address;
while (count > 0) {
tosend = min(count, (HVCS_BUFF_LEN - hvcsd->chars_in_buffer));
tosend = min_t(unsigned, count,
(HVCS_BUFF_LEN - hvcsd->chars_in_buffer));
/*
* No more space, this probably means that the last call to
* hvcs_write() didn't succeed and the buffer was filled up.

3
drivers/tty/hvc/hvsi.c
View File

@ -904,7 +904,8 @@ static unsigned int hvsi_chars_in_buffer(struct tty_struct *tty)
return hp->n_outbuf;
}
static int hvsi_write(struct tty_struct *tty, const u8 *source, int count)
static ssize_t hvsi_write(struct tty_struct *tty, const u8 *source,
size_t count)
{
struct hvsi_struct *hp = tty->driver_data;
unsigned long flags;

3
drivers/tty/ipwireless/tty.c
View File

@ -186,7 +186,8 @@ static void ipw_write_packet_sent_callback(void *callback_data,
tty->tx_bytes_queued -= packet_length;
}
static int ipw_write(struct tty_struct *linux_tty, const u8 *buf, int count)
static ssize_t ipw_write(struct tty_struct *linux_tty, const u8 *buf,
size_t count)
{
struct ipw_tty *tty = linux_tty->driver_data;
int room, ret;

6
drivers/tty/mips_ejtag_fdc.c
View File

@ -796,8 +796,8 @@ static void mips_ejtag_fdc_tty_hangup(struct tty_struct *tty)
tty_port_hangup(tty->port);
}
static int mips_ejtag_fdc_tty_write(struct tty_struct *tty, const u8 *buf,
int total)
static ssize_t mips_ejtag_fdc_tty_write(struct tty_struct *tty, const u8 *buf,
size_t total)
{
int count, block;
struct mips_ejtag_fdc_tty_port *dport = tty->driver_data;
@ -816,7 +816,7 @@ static int mips_ejtag_fdc_tty_write(struct tty_struct *tty, const u8 *buf,
*/
spin_lock(&dport->xmit_lock);
/* Work out how many bytes we can write to the xmit buffer */
total = min(total, (int)(priv->xmit_size - dport->xmit_cnt));
total = min_t(size_t, total, priv->xmit_size - dport->xmit_cnt);
atomic_add(total, &priv->xmit_total);
dport->xmit_cnt += total;
/* Write the actual bytes (may need splitting if it wraps) */

4
drivers/tty/moxa.c
View File

@ -487,7 +487,7 @@ module_param(ttymajor, int, 0);
*/
static int moxa_open(struct tty_struct *, struct file *);
static void moxa_close(struct tty_struct *, struct file *);
static int moxa_write(struct tty_struct *, const u8 *, int);
static ssize_t moxa_write(struct tty_struct *, const u8 *, size_t);
static unsigned int moxa_write_room(struct tty_struct *);
static void moxa_flush_buffer(struct tty_struct *);
static unsigned int moxa_chars_in_buffer(struct tty_struct *);
@ -1499,7 +1499,7 @@ static void moxa_close(struct tty_struct *tty, struct file *filp)
tty_port_close(&ch->port, tty, filp);
}
static int moxa_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t moxa_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct moxa_port *ch = tty->driver_data;
unsigned long flags;

2
drivers/tty/mxser.c
View File

@ -901,7 +901,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
tty_port_close(tty->port, tty, filp);
}
static int mxser_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t mxser_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct mxser_port *info = tty->driver_data;
unsigned long flags;

2
drivers/tty/n_gsm.c
View File

@ -4256,7 +4256,7 @@ static void gsmtty_hangup(struct tty_struct *tty)
gsm_dlci_begin_close(dlci);
}
static int gsmtty_write(struct tty_struct *tty, const u8 *buf, int len)
static ssize_t gsmtty_write(struct tty_struct *tty, const u8 *buf, size_t len)
{
int sent;
struct gsm_dlci *dlci = tty->driver_data;

3
drivers/tty/nozomi.c
View File

@ -1599,7 +1599,8 @@ static void ntty_hangup(struct tty_struct *tty)
* called when the userspace process writes to the tty (/dev/noz*).
* Data is inserted into a fifo, which is then read and transferred to the modem.
*/
static int ntty_write(struct tty_struct *tty, const u8 *buffer, int count)
static ssize_t ntty_write(struct tty_struct *tty, const u8 *buffer,
size_t count)
{
int rval = -EINVAL;
struct nozomi *dc = get_dc_by_tty(tty);

2
drivers/tty/pty.c
View File

@ -108,7 +108,7 @@ static void pty_unthrottle(struct tty_struct *tty)
* the other side of the pty/tty pair.
*/
static int pty_write(struct tty_struct *tty, const u8 *buf, int c)
static ssize_t pty_write(struct tty_struct *tty, const u8 *buf, size_t c)
{
struct tty_struct *to = tty->link;

5
drivers/tty/rpmsg_tty.c
View File

@ -73,7 +73,8 @@ static void rpmsg_tty_close(struct tty_struct *tty, struct file *filp)
return tty_port_close(tty->port, tty, filp);
}
static int rpmsg_tty_write(struct tty_struct *tty, const u8 *buf, int len)
static ssize_t rpmsg_tty_write(struct tty_struct *tty, const u8 *buf,
size_t len)
{
struct rpmsg_tty_port *cport = tty->driver_data;
struct rpmsg_device *rpdev;
@ -86,7 +87,7 @@ static int rpmsg_tty_write(struct tty_struct *tty, const u8 *buf, int len)
if (msg_max_size < 0)
return msg_max_size;
msg_size = min(len, msg_max_size);
msg_size = min_t(unsigned int, len, msg_max_size);
/*
* Use rpmsg_trysend instead of rpmsg_send to send the message so the caller is not

3
drivers/tty/serial/kgdb_nmi.c
View File

@ -304,7 +304,8 @@ static unsigned int kgdb_nmi_tty_write_room(struct tty_struct *tty)
return 2048;
}
static int kgdb_nmi_tty_write(struct tty_struct *tty, const u8 *buf, int c)
static ssize_t kgdb_nmi_tty_write(struct tty_struct *tty, const u8 *buf,
size_t c)
{
int i;

2
drivers/tty/serial/serial_core.c
View File

@ -580,7 +580,7 @@ static void uart_flush_chars(struct tty_struct *tty)
uart_start(tty);
}
static int uart_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t uart_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct uart_state *state = tty->driver_data;
struct uart_port *port;

4
drivers/tty/synclink_gt.c
View File

@ -745,7 +745,7 @@ static void update_tx_timer(struct slgt_info *info)
}
}
static int write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t write(struct tty_struct *tty, const u8 *buf, size_t count)
{
int ret = 0;
struct slgt_info *info = tty->driver_data;
@ -754,7 +754,7 @@ static int write(struct tty_struct *tty, const u8 *buf, int count)
if (sanity_check(info, tty->name, "write"))
return -EIO;
DBGINFO(("%s write count=%d\n", info->device_name, count));
DBGINFO(("%s write count=%zu\n", info->device_name, count));
if (!info->tx_buf || (count > info->max_frame_size))
return -EIO;

3
drivers/tty/ttynull.c
View File

@ -29,7 +29,8 @@ static void ttynull_hangup(struct tty_struct *tty)
tty_port_hangup(&ttynull_port);
}
static int ttynull_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t ttynull_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
return count;
}

5
drivers/tty/vcc.c
View File

@ -804,7 +804,7 @@ static void vcc_hangup(struct tty_struct *tty)
tty_port_hangup(tty->port);
}
static int vcc_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t vcc_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct vcc_port *port;
struct vio_vcc *pkt;
@ -826,7 +826,8 @@ static int vcc_write(struct tty_struct *tty, const u8 *buf, int count)
while (count > 0) {
/* Minimum of data to write and space available */
tosend = min(count, (VCC_BUFF_LEN - port->chars_in_buffer));
tosend = min_t(size_t, count,
(VCC_BUFF_LEN - port->chars_in_buffer));
if (!tosend)
break;

2
drivers/tty/vt/vt.c
View File

@ -3238,7 +3238,7 @@ int tioclinux(struct tty_struct *tty, unsigned long arg)
* /dev/ttyN handling
*/
static int con_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t con_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
int retval;

7
drivers/usb/class/cdc-acm.c
View File

@ -789,7 +789,8 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
tty_port_close(&acm->port, tty, filp);
}
static int acm_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t acm_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct acm *acm = tty->driver_data;
int stat;
@ -800,7 +801,7 @@ static int acm_tty_write(struct tty_struct *tty, const u8 *buf, int count)
if (!count)
return 0;
dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count);
dev_vdbg(&acm->data->dev, "%zu bytes from tty layer\n", count);
spin_lock_irqsave(&acm->write_lock, flags);
wbn = acm_wb_alloc(acm);
@ -817,7 +818,7 @@ static int acm_tty_write(struct tty_struct *tty, const u8 *buf, int count)
}
count = (count > acm->writesize) ? acm->writesize : count;
dev_vdbg(&acm->data->dev, "writing %d bytes\n", count);
dev_vdbg(&acm->data->dev, "writing %zu bytes\n", count);
memcpy(wb->buf, buf, count);
wb->len = count;

4
drivers/usb/gadget/function/u_serial.c
View File

@ -734,12 +734,12 @@ exit:
spin_unlock_irq(&port->port_lock);
}
static int gs_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t gs_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct gs_port *port = tty->driver_data;
unsigned long flags;
pr_vdebug("gs_write: ttyGS%d (%p) writing %d bytes\n",
pr_vdebug("gs_write: ttyGS%d (%p) writing %zu bytes\n",
port->port_num, tty, count);
spin_lock_irqsave(&port->port_lock, flags);

3
drivers/usb/host/xhci-dbgtty.c
View File

@ -208,7 +208,8 @@ static void dbc_tty_close(struct tty_struct *tty, struct file *file)
tty_port_close(&port->port, tty, file);
}
static int dbc_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t dbc_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct dbc_port *port = tty->driver_data;
unsigned long flags;

4
drivers/usb/serial/usb-serial.c
View File

@ -361,7 +361,7 @@ static void serial_cleanup(struct tty_struct *tty)
module_put(owner);
}
static int serial_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t serial_write(struct tty_struct *tty, const u8 *buf, size_t count)
{
struct usb_serial_port *port = tty->driver_data;
int retval = -ENODEV;
@ -369,7 +369,7 @@ static int serial_write(struct tty_struct *tty, const u8 *buf, int count)
if (port->serial->dev->state == USB_STATE_NOTATTACHED)
goto exit;
dev_dbg(&port->dev, "%s - %d byte(s)\n", __func__, count);
dev_dbg(&port->dev, "%s - %zu byte(s)\n", __func__, count);
retval = port->serial->type->write(tty, port, buf, count);
if (retval < 0)

6
include/linux/tty_driver.h
View File

@ -72,8 +72,8 @@ struct serial_struct;
* is closed for the last time freeing up the resources. This is
* actually the second part of shutdown for routines that might sleep.
*
* @write: ``int ()(struct tty_struct *tty, const unsigned char *buf,
* int count)``
* @write: ``ssize_t ()(struct tty_struct *tty, const unsigned char *buf,
* size_t count)``
*
* This routine is called by the kernel to write a series (@count) of
* characters (@buf) to the @tty device. The characters may come from
@ -356,7 +356,7 @@ struct tty_operations {
void (*close)(struct tty_struct * tty, struct file * filp);
void (*shutdown)(struct tty_struct *tty);
void (*cleanup)(struct tty_struct *tty);
int (*write)(struct tty_struct *tty, const u8 *buf, int count);
ssize_t (*write)(struct tty_struct *tty, const u8 *buf, size_t count);
int (*put_char)(struct tty_struct *tty, u8 ch);
void (*flush_chars)(struct tty_struct *tty);
unsigned int (*write_room)(struct tty_struct *tty);

5
net/bluetooth/rfcomm/tty.c
View File

@ -779,14 +779,15 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp)
tty_port_close(&dev->port, tty, filp);
}
static int rfcomm_tty_write(struct tty_struct *tty, const u8 *buf, int count)
static ssize_t rfcomm_tty_write(struct tty_struct *tty, const u8 *buf,
size_t count)
{
struct rfcomm_dev *dev = tty->driver_data;
struct rfcomm_dlc *dlc = dev->dlc;
struct sk_buff *skb;
int sent = 0, size;
BT_DBG("tty %p count %d", tty, count);
BT_DBG("tty %p count %zu", tty, count);
while (count) {
size = min_t(uint, count, dlc->mtu);