USB: mos7840: fix port_probe flow
Remove temporary do-while(0) loop used to keep changes minimal. Fixup indentation, remove some line breaks, and replace break with goto to maintain flow. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
80c00750f0
commit
ae685effe7
|
@ -2340,208 +2340,191 @@ static int mos7840_port_probe(struct usb_serial_port *port)
|
|||
|
||||
pnum = port->number - serial->minor;
|
||||
|
||||
/* FIXME: remove do-while(0) loop used to keep stable patch minimal.
|
||||
*/
|
||||
do {
|
||||
dev_dbg(&port->dev, "mos7840_startup: configuring port %d............\n", pnum);
|
||||
mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL);
|
||||
if (mos7840_port == NULL) {
|
||||
dev_err(&port->dev, "%s - Out of memory\n", __func__);
|
||||
return -ENOMEM;
|
||||
}
|
||||
dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum);
|
||||
mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL);
|
||||
if (mos7840_port == NULL) {
|
||||
dev_err(&port->dev, "%s - Out of memory\n", __func__);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* Initialize all port interrupt end point to port 0 int
|
||||
* endpoint. Our device has only one interrupt end point
|
||||
* common to all port */
|
||||
/* Initialize all port interrupt end point to port 0 int
|
||||
* endpoint. Our device has only one interrupt end point
|
||||
* common to all port */
|
||||
|
||||
mos7840_port->port = port;
|
||||
mos7840_set_port_private(port, mos7840_port);
|
||||
spin_lock_init(&mos7840_port->pool_lock);
|
||||
mos7840_port->port = port;
|
||||
mos7840_set_port_private(port, mos7840_port);
|
||||
spin_lock_init(&mos7840_port->pool_lock);
|
||||
|
||||
/* minor is not initialised until later by
|
||||
* usb-serial.c:get_free_serial() and cannot therefore be used
|
||||
* to index device instances */
|
||||
mos7840_port->port_num = pnum + 1;
|
||||
dev_dbg(&port->dev, "port->number = %d\n", port->number);
|
||||
dev_dbg(&port->dev, "port->serial->minor = %d\n", port->serial->minor);
|
||||
dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num);
|
||||
dev_dbg(&port->dev, "serial->minor = %d\n", serial->minor);
|
||||
/* minor is not initialised until later by
|
||||
* usb-serial.c:get_free_serial() and cannot therefore be used
|
||||
* to index device instances */
|
||||
mos7840_port->port_num = pnum + 1;
|
||||
dev_dbg(&port->dev, "port->number = %d\n", port->number);
|
||||
dev_dbg(&port->dev, "port->serial->minor = %d\n", port->serial->minor);
|
||||
dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num);
|
||||
dev_dbg(&port->dev, "serial->minor = %d\n", serial->minor);
|
||||
|
||||
if (mos7840_port->port_num == 1) {
|
||||
mos7840_port->SpRegOffset = 0x0;
|
||||
mos7840_port->ControlRegOffset = 0x1;
|
||||
mos7840_port->DcrRegOffset = 0x4;
|
||||
} else if ((mos7840_port->port_num == 2)
|
||||
&& (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0x8;
|
||||
mos7840_port->ControlRegOffset = 0x9;
|
||||
mos7840_port->DcrRegOffset = 0x16;
|
||||
} else if ((mos7840_port->port_num == 2)
|
||||
&& (serial->num_ports == 2)) {
|
||||
mos7840_port->SpRegOffset = 0xa;
|
||||
mos7840_port->ControlRegOffset = 0xb;
|
||||
mos7840_port->DcrRegOffset = 0x19;
|
||||
} else if ((mos7840_port->port_num == 3)
|
||||
&& (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0xa;
|
||||
mos7840_port->ControlRegOffset = 0xb;
|
||||
mos7840_port->DcrRegOffset = 0x19;
|
||||
} else if ((mos7840_port->port_num == 4)
|
||||
&& (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0xc;
|
||||
mos7840_port->ControlRegOffset = 0xd;
|
||||
mos7840_port->DcrRegOffset = 0x1c;
|
||||
}
|
||||
mos7840_dump_serial_port(port, mos7840_port);
|
||||
mos7840_set_port_private(port, mos7840_port);
|
||||
if (mos7840_port->port_num == 1) {
|
||||
mos7840_port->SpRegOffset = 0x0;
|
||||
mos7840_port->ControlRegOffset = 0x1;
|
||||
mos7840_port->DcrRegOffset = 0x4;
|
||||
} else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0x8;
|
||||
mos7840_port->ControlRegOffset = 0x9;
|
||||
mos7840_port->DcrRegOffset = 0x16;
|
||||
} else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) {
|
||||
mos7840_port->SpRegOffset = 0xa;
|
||||
mos7840_port->ControlRegOffset = 0xb;
|
||||
mos7840_port->DcrRegOffset = 0x19;
|
||||
} else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0xa;
|
||||
mos7840_port->ControlRegOffset = 0xb;
|
||||
mos7840_port->DcrRegOffset = 0x19;
|
||||
} else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) {
|
||||
mos7840_port->SpRegOffset = 0xc;
|
||||
mos7840_port->ControlRegOffset = 0xd;
|
||||
mos7840_port->DcrRegOffset = 0x1c;
|
||||
}
|
||||
mos7840_dump_serial_port(port, mos7840_port);
|
||||
mos7840_set_port_private(port, mos7840_port);
|
||||
|
||||
/* enable rx_disable bit in control register */
|
||||
status = mos7840_get_reg_sync(port,
|
||||
mos7840_port->ControlRegOffset, &Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status);
|
||||
Data |= 0x08; /* setting driver done bit */
|
||||
Data |= 0x04; /* sp1_bit to have cts change reflect in
|
||||
modem status reg */
|
||||
/* enable rx_disable bit in control register */
|
||||
status = mos7840_get_reg_sync(port,
|
||||
mos7840_port->ControlRegOffset, &Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status);
|
||||
Data |= 0x08; /* setting driver done bit */
|
||||
Data |= 0x04; /* sp1_bit to have cts change reflect in
|
||||
modem status reg */
|
||||
|
||||
/* Data |= 0x20; //rx_disable bit */
|
||||
/* Data |= 0x20; //rx_disable bit */
|
||||
status = mos7840_set_reg_sync(port,
|
||||
mos7840_port->ControlRegOffset, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status);
|
||||
|
||||
/* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2
|
||||
and 0x24 in DCR3 */
|
||||
Data = 0x01;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 0), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status);
|
||||
|
||||
Data = 0x05;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 1), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status);
|
||||
|
||||
Data = 0x24;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 2), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status);
|
||||
|
||||
/* write values in clkstart0x0 and clkmulti 0x20 */
|
||||
Data = 0x0;
|
||||
status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status);
|
||||
|
||||
Data = 0x20;
|
||||
status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status);
|
||||
goto error;
|
||||
} else
|
||||
dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status);
|
||||
|
||||
/* write value 0x0 to scratchpad register */
|
||||
Data = 0x00;
|
||||
status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status);
|
||||
|
||||
/* Zero Length flag register */
|
||||
if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) {
|
||||
Data = 0xff;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
mos7840_port->ControlRegOffset, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status);
|
||||
|
||||
/* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2
|
||||
and 0x24 in DCR3 */
|
||||
Data = 0x01;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 0), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status);
|
||||
|
||||
Data = 0x05;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 1), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status);
|
||||
|
||||
Data = 0x24;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (mos7840_port->DcrRegOffset + 2), Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status);
|
||||
|
||||
/* write values in clkstart0x0 and clkmulti 0x20 */
|
||||
Data = 0x0;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
CLK_START_VALUE_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status);
|
||||
|
||||
Data = 0x20;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
CLK_MULTI_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status);
|
||||
goto error;
|
||||
} else
|
||||
dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status);
|
||||
|
||||
/* write value 0x0 to scratchpad register */
|
||||
Data = 0x00;
|
||||
status = mos7840_set_uart_reg(port,
|
||||
SCRATCH_PAD_REGISTER, Data);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status);
|
||||
|
||||
/* Zero Length flag register */
|
||||
if ((mos7840_port->port_num != 1)
|
||||
&& (serial->num_ports == 2)) {
|
||||
|
||||
Data = 0xff;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (ZLP_REG1 +
|
||||
((__u16)mos7840_port->port_num)), Data);
|
||||
dev_dbg(&port->dev, "ZLIP offset %x\n",
|
||||
(__u16) (ZLP_REG1 +
|
||||
((__u16)mos7840_port->port_num)), Data);
|
||||
dev_dbg(&port->dev, "ZLIP offset %x\n",
|
||||
(__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num)));
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status);
|
||||
} else {
|
||||
Data = 0xff;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (ZLP_REG1 +
|
||||
((__u16)mos7840_port->port_num) - 0x1), Data);
|
||||
dev_dbg(&port->dev, "ZLIP offset %x\n",
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status);
|
||||
} else {
|
||||
Data = 0xff;
|
||||
status = mos7840_set_reg_sync(port,
|
||||
(__u16) (ZLP_REG1 +
|
||||
((__u16)mos7840_port->port_num) - 0x1), Data);
|
||||
dev_dbg(&port->dev, "ZLIP offset %x\n",
|
||||
(__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1));
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status);
|
||||
break;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status);
|
||||
if (status < 0) {
|
||||
dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status);
|
||||
goto out;
|
||||
} else
|
||||
dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status);
|
||||
|
||||
}
|
||||
mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
|
||||
mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest),
|
||||
GFP_KERNEL);
|
||||
if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf ||
|
||||
!mos7840_port->dr) {
|
||||
status = -ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
|
||||
mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest),
|
||||
GFP_KERNEL);
|
||||
if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf ||
|
||||
!mos7840_port->dr) {
|
||||
status = -ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
|
||||
mos7840_port->has_led = false;
|
||||
mos7840_port->has_led = false;
|
||||
|
||||
/* Initialize LED timers */
|
||||
if (device_type == MOSCHIP_DEVICE_ID_7810) {
|
||||
mos7840_port->has_led = true;
|
||||
/* Initialize LED timers */
|
||||
if (device_type == MOSCHIP_DEVICE_ID_7810) {
|
||||
mos7840_port->has_led = true;
|
||||
|
||||
init_timer(&mos7840_port->led_timer1);
|
||||
mos7840_port->led_timer1.function = mos7840_led_off;
|
||||
mos7840_port->led_timer1.expires =
|
||||
jiffies + msecs_to_jiffies(LED_ON_MS);
|
||||
mos7840_port->led_timer1.data =
|
||||
(unsigned long)mos7840_port;
|
||||
init_timer(&mos7840_port->led_timer1);
|
||||
mos7840_port->led_timer1.function = mos7840_led_off;
|
||||
mos7840_port->led_timer1.expires =
|
||||
jiffies + msecs_to_jiffies(LED_ON_MS);
|
||||
mos7840_port->led_timer1.data = (unsigned long)mos7840_port;
|
||||
|
||||
init_timer(&mos7840_port->led_timer2);
|
||||
mos7840_port->led_timer2.function =
|
||||
mos7840_led_flag_off;
|
||||
mos7840_port->led_timer2.expires =
|
||||
jiffies + msecs_to_jiffies(LED_OFF_MS);
|
||||
mos7840_port->led_timer2.data =
|
||||
(unsigned long)mos7840_port;
|
||||
init_timer(&mos7840_port->led_timer2);
|
||||
mos7840_port->led_timer2.function = mos7840_led_flag_off;
|
||||
mos7840_port->led_timer2.expires =
|
||||
jiffies + msecs_to_jiffies(LED_OFF_MS);
|
||||
mos7840_port->led_timer2.data = (unsigned long)mos7840_port;
|
||||
|
||||
mos7840_port->led_flag = false;
|
||||
|
||||
/* Turn off LED */
|
||||
mos7840_set_led_sync(port,
|
||||
MODEM_CONTROL_REGISTER, 0x0300);
|
||||
}
|
||||
} while (0);
|
||||
mos7840_port->led_flag = false;
|
||||
|
||||
/* Turn off LED */
|
||||
mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300);
|
||||
}
|
||||
out:
|
||||
if (pnum == serial->num_ports - 1) {
|
||||
/* Zero Length flag enable */
|
||||
Data = 0x0f;
|
||||
|
|
Loading…
Reference in a new issue