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.
---
drivers/usb/serial/mos7840.c | 349 ++++++++++++++++++++-----------------------
1 file changed, 166 insertions(+), 183 deletions(-)
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index bc3df86..1cf3375 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -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;
- }
-
- /* 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);
-
- /* 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);
+ 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;
+ }
- /* 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 */
+ /* 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);
+
+ /* 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);
+
+ /* 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 */
+ 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 |= 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);
- break;
- } else
- dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) 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);
- /* 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 = 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);
- 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);
+ /* 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 = 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);
+ 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 values in clkstart0x0 and clkmulti 0x20 */
- Data = 0x0;
+ /* 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,
- CLK_START_VALUE_REGISTER, Data);
+ (__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 CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
- break;
+ dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status);
+ goto out;
} else
- dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status);
-
- Data = 0x20;
+ dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status);
+ } else {
+ Data = 0xff;
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);
+ (__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 SCRATCH_PAD_REGISTER failed status-0x%x\n", status);
- break;
+ dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status);
+ goto out;
} else
- dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status);
+ dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, 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)));
- 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",
- (__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);
-
- }
- 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->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;
+ }
- /* Initialize LED timers */
- if (device_type == MOSCHIP_DEVICE_ID_7810) {
- mos7840_port->has_led = true;
+ mos7840_port->has_led = false;
- 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;
+ /* Initialize LED timers */
+ if (device_type == MOSCHIP_DEVICE_ID_7810) {
+ mos7840_port->has_led = true;
- 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_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;
- mos7840_port->led_flag = false;
+ 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;
- /* 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;
--
1.7.12.4
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