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path: root/drivers/usb/serial/mos7840.c
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Diffstat (limited to 'drivers/usb/serial/mos7840.c')
-rw-r--r--drivers/usb/serial/mos7840.c125
1 files changed, 19 insertions, 106 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 36620c65107..f76480f1455 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -434,15 +434,11 @@ static void mos7840_control_callback(struct urb *urb)
struct moschip_port *mos7840_port;
__u8 regval = 0x0;
int result = 0;
-
- if (!urb) {
- dbg("%s", "Invalid Pointer !!!!:\n");
- return;
- }
+ int status = urb->status;
mos7840_port = (struct moschip_port *)urb->context;
- switch (urb->status) {
+ switch (status) {
case 0:
/* success */
break;
@@ -451,11 +447,11 @@ static void mos7840_control_callback(struct urb *urb)
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__,
- urb->status);
+ status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__,
- urb->status);
+ status);
goto exit;
}
@@ -521,14 +517,11 @@ static void mos7840_interrupt_callback(struct urb *urb)
__u8 sp[5], st;
int i, rv = 0;
__u16 wval, wreg = 0;
+ int status = urb->status;
dbg("%s", " : Entering\n");
- if (!urb) {
- dbg("%s", "Invalid Pointer !!!!:\n");
- return;
- }
- switch (urb->status) {
+ switch (status) {
case 0:
/* success */
break;
@@ -537,11 +530,11 @@ static void mos7840_interrupt_callback(struct urb *urb)
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__,
- urb->status);
+ status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__,
- urb->status);
+ status);
goto exit;
}
@@ -666,20 +659,16 @@ static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port,
static void mos7840_bulk_in_callback(struct urb *urb)
{
- int status;
+ int retval;
unsigned char *data;
struct usb_serial *serial;
struct usb_serial_port *port;
struct moschip_port *mos7840_port;
struct tty_struct *tty;
+ int status = urb->status;
- if (!urb) {
- dbg("%s", "Invalid Pointer !!!!:\n");
- return;
- }
-
- if (urb->status) {
- dbg("nonzero read bulk status received: %d", urb->status);
+ if (status) {
+ dbg("nonzero read bulk status received: %d", status);
return;
}
@@ -729,11 +718,11 @@ static void mos7840_bulk_in_callback(struct urb *urb)
mos7840_port->read_urb->dev = serial->dev;
- status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
+ retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
- if (status) {
- dbg(" usb_submit_urb(read bulk) failed, status = %d",
- status);
+ if (retval) {
+ dbg(" usb_submit_urb(read bulk) failed, retval = %d",
+ retval);
}
}
@@ -747,13 +736,9 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
{
struct moschip_port *mos7840_port;
struct tty_struct *tty;
+ int status = urb->status;
int i;
- if (!urb) {
- dbg("%s", "Invalid Pointer !!!!:\n");
- return;
- }
-
mos7840_port = (struct moschip_port *)urb->context;
spin_lock(&mos7840_port->pool_lock);
for (i = 0; i < NUM_URBS; i++) {
@@ -764,8 +749,8 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
}
spin_unlock(&mos7840_port->pool_lock);
- if (urb->status) {
- dbg("nonzero write bulk status received:%d\n", urb->status);
+ if (status) {
+ dbg("nonzero write bulk status received:%d\n", status);
return;
}
@@ -2185,16 +2170,6 @@ static void mos7840_set_termios(struct usb_serial_port *port,
return;
}
- /* check that they really want us to change something */
- if (old_termios) {
- if ((cflag == old_termios->c_cflag) &&
- (RELEVANT_IFLAG(tty->termios->c_iflag) ==
- RELEVANT_IFLAG(old_termios->c_iflag))) {
- dbg("%s\n", "Nothing to change");
- return;
- }
- }
-
dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag));
@@ -2254,30 +2229,6 @@ static int mos7840_get_lsr_info(struct moschip_port *mos7840_port,
}
/*****************************************************************************
- * mos7840_get_bytes_avail - get number of bytes available
- *
- * Purpose: Let user call ioctl to get the count of number of bytes available.
- *****************************************************************************/
-
-static int mos7840_get_bytes_avail(struct moschip_port *mos7840_port,
- unsigned int __user *value)
-{
- unsigned int result = 0;
- struct tty_struct *tty = mos7840_port->port->tty;
-
- if (!tty)
- return -ENOIOCTLCMD;
-
- result = tty->read_cnt;
-
- dbg("%s(%d) = %d", __FUNCTION__, mos7840_port->port->number, result);
- if (copy_to_user(value, &result, sizeof(int)))
- return -EFAULT;
-
- return -ENOIOCTLCMD;
-}
-
-/*****************************************************************************
* mos7840_set_modem_info
* function to set modem info
*****************************************************************************/
@@ -2425,8 +2376,6 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
struct async_icount cprev;
struct serial_icounter_struct icount;
int mosret = 0;
- int retval;
- struct tty_ldisc *ld;
if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
dbg("%s", "Invalid port \n");
@@ -2445,42 +2394,6 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
switch (cmd) {
/* return number of bytes available */
- case TIOCINQ:
- dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
- return mos7840_get_bytes_avail(mos7840_port, argp);
-
- case TIOCOUTQ:
- dbg("%s (%d) TIOCOUTQ", __FUNCTION__, port->number);
- return put_user(tty->driver->chars_in_buffer ?
- tty->driver->chars_in_buffer(tty) : 0,
- (int __user *)arg);
-
- case TCFLSH:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
-
- ld = tty_ldisc_ref(tty);
- switch (arg) {
- case TCIFLUSH:
- if (ld && ld->flush_buffer)
- ld->flush_buffer(tty);
- break;
- case TCIOFLUSH:
- if (ld && ld->flush_buffer)
- ld->flush_buffer(tty);
- /* fall through */
- case TCOFLUSH:
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
- break;
- default:
- tty_ldisc_deref(ld);
- return -EINVAL;
- }
- tty_ldisc_deref(ld);
- return 0;
-
case TIOCSERGETLSR:
dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
return mos7840_get_lsr_info(mos7840_port, argp);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 02:01:54 +0000