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USB-serial updates for v4.19-rc1

Browse Source 
Here are the USB-serial updates for 4.19-rc1, including:
 
  - gpio support for CP2102N devices
  - improved line-speed handling for cp210x
  - conversion to spin_lock_irqsave() in completion handlers
  - dropped kl5kusb105 support from the kl5kusb105 driver (sic!)
 
 Included are also various lower-priority fixes and clean ups.
 
 All but the final commit have been in linux-next, and with no reported
 issues.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.19-rc1

Here are the USB-serial updates for 4.19-rc1, including:

 - gpio support for CP2102N devices
 - improved line-speed handling for cp210x
 - conversion to spin_lock_irqsave() in completion handlers
 - dropped kl5kusb105 support from the kl5kusb105 driver (sic!)

Included are also various lower-priority fixes and clean ups.

All but the final commit have been in linux-next, and with no reported
issues.

Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Greg Kroah-Hartman 2018-07-20 21:47:15 +02:00
commit 78fbe864c3
19 changed files with 431 additions and 168 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/usb/usb-serial.txt
View File

@ -418,15 +418,6 @@ Current status:
why it is wise to cut down on the rate used is wise for large
transfers until this is settled.
Options supported:
If this driver is compiled as a module you can pass the following
options to it:
debug - extra verbose debugging info
(default: 0; nonzero enables)
use_lowlatency - use low_latency flag to speed up tty layer
when reading from the device.
(default: 0; nonzero enables)
See http://www.uuhaus.de/linux/palmconnect.html for up-to-date
information on this driver.

421
drivers/usb/serial/cp210x.c
View File

@ -239,11 +239,14 @@ MODULE_DEVICE_TABLE(usb, id_table);
struct cp210x_serial_private {
#ifdef CONFIG_GPIOLIB
struct gpio_chip gc;
u8 config;
u8 gpio_mode;
bool gpio_registered;
u8 gpio_pushpull;
u8 gpio_altfunc;
u8 gpio_input;
#endif
u8 partnum;
speed_t max_speed;
bool use_actual_rate;
};
struct cp210x_port_private {
@ -356,6 +359,7 @@ static struct usb_serial_driver * const serial_drivers[] = {
#define CONTROL_WRITE_RTS 0x0200
/* CP210X_VENDOR_SPECIFIC values */
#define CP210X_READ_2NCONFIG 0x000E
#define CP210X_READ_LATCH 0x00C2
#define CP210X_GET_PARTNUM 0x370B
#define CP210X_GET_PORTCONFIG 0x370C
@ -369,6 +373,9 @@ static struct usb_serial_driver * const serial_drivers[] = {
#define CP210X_PARTNUM_CP2104 0x04
#define CP210X_PARTNUM_CP2105 0x05
#define CP210X_PARTNUM_CP2108 0x08
#define CP210X_PARTNUM_CP2102N_QFN28 0x20
#define CP210X_PARTNUM_CP2102N_QFN24 0x21
#define CP210X_PARTNUM_CP2102N_QFN20 0x22
#define CP210X_PARTNUM_UNKNOWN 0xFF
/* CP210X_GET_COMM_STATUS returns these 0x13 bytes */
@ -462,6 +469,12 @@ struct cp210x_config {
#define CP2105_GPIO1_RXLED_MODE BIT(1)
#define CP2105_GPIO1_RS485_MODE BIT(2)
/* CP2102N configuration array indices */
#define CP210X_2NCONFIG_CONFIG_VERSION_IDX 2
#define CP210X_2NCONFIG_GPIO_MODE_IDX 581
#define CP210X_2NCONFIG_GPIO_RSTLATCH_IDX 587
#define CP210X_2NCONFIG_GPIO_CONTROL_IDX 600
/* CP210X_VENDOR_SPECIFIC, CP210X_WRITE_LATCH call writes these 0x2 bytes. */
struct cp210x_gpio_write {
u8 mask;
@ -767,48 +780,6 @@ static int cp210x_get_line_ctl(struct usb_serial_port *port, u16 *ctl)
return 0;
}
/*
* cp210x_quantise_baudrate
* Quantises the baud rate as per AN205 Table 1
*/
static unsigned int cp210x_quantise_baudrate(unsigned int baud)
{
if (baud <= 300)
baud = 300;
else if (baud <= 600) baud = 600;
else if (baud <= 1200) baud = 1200;
else if (baud <= 1800) baud = 1800;
else if (baud <= 2400) baud = 2400;
else if (baud <= 4000) baud = 4000;
else if (baud <= 4803) baud = 4800;
else if (baud <= 7207) baud = 7200;
else if (baud <= 9612) baud = 9600;
else if (baud <= 14428) baud = 14400;
else if (baud <= 16062) baud = 16000;
else if (baud <= 19250) baud = 19200;
else if (baud <= 28912) baud = 28800;
else if (baud <= 38601) baud = 38400;
else if (baud <= 51558) baud = 51200;
else if (baud <= 56280) baud = 56000;
else if (baud <= 58053) baud = 57600;
else if (baud <= 64111) baud = 64000;
else if (baud <= 77608) baud = 76800;
else if (baud <= 117028) baud = 115200;
else if (baud <= 129347) baud = 128000;
else if (baud <= 156868) baud = 153600;
else if (baud <= 237832) baud = 230400;
else if (baud <= 254234) baud = 250000;
else if (baud <= 273066) baud = 256000;
else if (baud <= 491520) baud = 460800;
else if (baud <= 567138) baud = 500000;
else if (baud <= 670254) baud = 576000;
else if (baud < 1000000)
baud = 921600;
else if (baud > 2000000)
baud = 2000000;
return baud;
}
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
{
int result;
@ -1028,6 +999,75 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
*cflagp = cflag;
}
struct cp210x_rate {
speed_t rate;
speed_t high;
};
static const struct cp210x_rate cp210x_an205_table1[] = {
{ 300, 300 },
{ 600, 600 },
{ 1200, 1200 },
{ 1800, 1800 },
{ 2400, 2400 },
{ 4000, 4000 },
{ 4800, 4803 },
{ 7200, 7207 },
{ 9600, 9612 },
{ 14400, 14428 },
{ 16000, 16062 },
{ 19200, 19250 },
{ 28800, 28912 },
{ 38400, 38601 },
{ 51200, 51558 },
{ 56000, 56280 },
{ 57600, 58053 },
{ 64000, 64111 },
{ 76800, 77608 },
{ 115200, 117028 },
{ 128000, 129347 },
{ 153600, 156868 },
{ 230400, 237832 },
{ 250000, 254234 },
{ 256000, 273066 },
{ 460800, 491520 },
{ 500000, 567138 },
{ 576000, 670254 },
{ 921600, UINT_MAX }
};
/*
* Quantises the baud rate as per AN205 Table 1
*/
static speed_t cp210x_get_an205_rate(speed_t baud)
{
int i;
for (i = 0; i < ARRAY_SIZE(cp210x_an205_table1); ++i) {
if (baud <= cp210x_an205_table1[i].high)
break;
}
return cp210x_an205_table1[i].rate;
}
static speed_t cp210x_get_actual_rate(struct usb_serial *serial, speed_t baud)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
unsigned int prescale = 1;
unsigned int div;
baud = clamp(baud, 300u, priv->max_speed);
if (baud <= 365)
prescale = 4;
div = DIV_ROUND_CLOSEST(48000000, 2 * prescale * baud);
baud = 48000000 / (2 * prescale * div);
return baud;
}
/*
* CP2101 supports the following baud rates:
*
@ -1057,16 +1097,24 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
static void cp210x_change_speed(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
struct usb_serial *serial = port->serial;
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
u32 baud;
baud = tty->termios.c_ospeed;
/* This maps the requested rate to a rate valid on cp2102 or cp2103,
* or to an arbitrary rate in [1M,2M].
/*
* This maps the requested rate to the actual rate, a valid rate on
* cp2102 or cp2103, or to an arbitrary rate in [1M, max_speed].
*
* NOTE: B0 is not implemented.
*/
baud = cp210x_quantise_baudrate(baud);
if (priv->use_actual_rate)
baud = cp210x_get_actual_rate(serial, baud);
else if (baud < 1000000)
baud = cp210x_get_an205_rate(baud);
else if (baud > priv->max_speed)
baud = priv->max_speed;
dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud);
if (cp210x_write_u32_reg(port, CP210X_SET_BAUDRATE, baud)) {
@ -1288,17 +1336,8 @@ static int cp210x_gpio_request(struct gpio_chip *gc, unsigned int offset)
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
switch (offset) {
case 0:
if (priv->config & CP2105_GPIO0_TXLED_MODE)
return -ENODEV;
break;
case 1:
if (priv->config & (CP2105_GPIO1_RXLED_MODE |
CP2105_GPIO1_RS485_MODE))
return -ENODEV;
break;
}
if (priv->gpio_altfunc & BIT(offset))
return -ENODEV;
return 0;
}
@ -1306,10 +1345,15 @@ static int cp210x_gpio_request(struct gpio_chip *gc, unsigned int offset)
static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio)
{
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
u8 req_type = REQTYPE_DEVICE_TO_HOST;
int result;
u8 buf;
result = cp210x_read_vendor_block(serial, REQTYPE_INTERFACE_TO_HOST,
if (priv->partnum == CP210X_PARTNUM_CP2105)
req_type = REQTYPE_INTERFACE_TO_HOST;
result = cp210x_read_vendor_block(serial, req_type,
CP210X_READ_LATCH, &buf, sizeof(buf));
if (result < 0)
return result;
@ -1320,7 +1364,9 @@ static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio)
static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
{
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
struct cp210x_gpio_write buf;
int result;
if (value == 1)
buf.state = BIT(gpio);
@ -1329,25 +1375,68 @@ static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
buf.mask = BIT(gpio);
cp210x_write_vendor_block(serial, REQTYPE_HOST_TO_INTERFACE,
CP210X_WRITE_LATCH, &buf, sizeof(buf));
if (priv->partnum == CP210X_PARTNUM_CP2105) {
result = cp210x_write_vendor_block(serial,
REQTYPE_HOST_TO_INTERFACE,
CP210X_WRITE_LATCH, &buf,
sizeof(buf));
} else {
u16 wIndex = buf.state << 8 | buf.mask;
result = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
CP210X_VENDOR_SPECIFIC,
REQTYPE_HOST_TO_DEVICE,
CP210X_WRITE_LATCH,
wIndex,
NULL, 0, USB_CTRL_SET_TIMEOUT);
}
if (result < 0) {
dev_err(&serial->interface->dev, "failed to set GPIO value: %d\n",
result);
}
}
static int cp210x_gpio_direction_get(struct gpio_chip *gc, unsigned int gpio)
{
/* Hardware does not support an input mode */
return 0;
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
return priv->gpio_input & BIT(gpio);
}
static int cp210x_gpio_direction_input(struct gpio_chip *gc, unsigned int gpio)
{
/* Hardware does not support an input mode */
return -ENOTSUPP;
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
if (priv->partnum == CP210X_PARTNUM_CP2105) {
/* hardware does not support an input mode */
return -ENOTSUPP;
}
/* push-pull pins cannot be changed to be inputs */
if (priv->gpio_pushpull & BIT(gpio))
return -EINVAL;
/* make sure to release pin if it is being driven low */
cp210x_gpio_set(gc, gpio, 1);
priv->gpio_input |= BIT(gpio);
return 0;
}
static int cp210x_gpio_direction_output(struct gpio_chip *gc, unsigned int gpio,
int value)
{
struct usb_serial *serial = gpiochip_get_data(gc);
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
priv->gpio_input &= ~BIT(gpio);
cp210x_gpio_set(gc, gpio, value);
return 0;
}
@ -1360,11 +1449,11 @@ static int cp210x_gpio_set_config(struct gpio_chip *gc, unsigned int gpio,
/* Succeed only if in correct mode (this can't be set at runtime) */
if ((param == PIN_CONFIG_DRIVE_PUSH_PULL) &&
(priv->gpio_mode & BIT(gpio)))
(priv->gpio_pushpull & BIT(gpio)))
return 0;
if ((param == PIN_CONFIG_DRIVE_OPEN_DRAIN) &&
!(priv->gpio_mode & BIT(gpio)))
!(priv->gpio_pushpull & BIT(gpio)))
return 0;
return -ENOTSUPP;
@ -1377,12 +1466,13 @@ static int cp210x_gpio_set_config(struct gpio_chip *gc, unsigned int gpio,
* this driver that provide GPIO do so in a way that does not impact other
* signals and are thus expected to have very different initialisation.
*/
static int cp2105_shared_gpio_init(struct usb_serial *serial)
static int cp2105_gpioconf_init(struct usb_serial *serial)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
struct cp210x_pin_mode mode;
struct cp210x_config config;
u8 intf_num = cp210x_interface_num(serial);
u8 iface_config;
int result;
result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
@ -1399,20 +1489,26 @@ static int cp2105_shared_gpio_init(struct usb_serial *serial)
/* 2 banks of GPIO - One for the pins taken from each serial port */
if (intf_num == 0) {
if (mode.eci == CP210X_PIN_MODE_MODEM)
if (mode.eci == CP210X_PIN_MODE_MODEM) {
/* mark all GPIOs of this interface as reserved */
priv->gpio_altfunc = 0xff;
return 0;
}
priv->config = config.eci_cfg;
priv->gpio_mode = (u8)((le16_to_cpu(config.gpio_mode) &
iface_config = config.eci_cfg;
priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) &
CP210X_ECI_GPIO_MODE_MASK) >>
CP210X_ECI_GPIO_MODE_OFFSET);
priv->gc.ngpio = 2;
} else if (intf_num == 1) {
if (mode.sci == CP210X_PIN_MODE_MODEM)
if (mode.sci == CP210X_PIN_MODE_MODEM) {
/* mark all GPIOs of this interface as reserved */
priv->gpio_altfunc = 0xff;
return 0;
}
priv->config = config.sci_cfg;
priv->gpio_mode = (u8)((le16_to_cpu(config.gpio_mode) &
iface_config = config.sci_cfg;
priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) &
CP210X_SCI_GPIO_MODE_MASK) >>
CP210X_SCI_GPIO_MODE_OFFSET);
priv->gc.ngpio = 3;
@ -1420,6 +1516,125 @@ static int cp2105_shared_gpio_init(struct usb_serial *serial)
return -ENODEV;
}
/* mark all pins which are not in GPIO mode */
if (iface_config & CP2105_GPIO0_TXLED_MODE) /* GPIO 0 */
priv->gpio_altfunc |= BIT(0);
if (iface_config & (CP2105_GPIO1_RXLED_MODE | /* GPIO 1 */
CP2105_GPIO1_RS485_MODE))
priv->gpio_altfunc |= BIT(1);
/* driver implementation for CP2105 only supports outputs */
priv->gpio_input = 0;
return 0;
}
static int cp2102n_gpioconf_init(struct usb_serial *serial)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
const u16 config_size = 0x02a6;
u8 gpio_rst_latch;
u8 config_version;
u8 gpio_pushpull;
u8 *config_buf;
u8 gpio_latch;
u8 gpio_ctrl;
int result;
u8 i;
/*
* Retrieve device configuration from the device.
* The array received contains all customization settings done at the
* factory/manufacturer. Format of the array is documented at the
* time of writing at:
* https://www.silabs.com/community/interface/knowledge-base.entry.html/2017/03/31/cp2102n_setconfig-xsfa
*/
config_buf = kmalloc(config_size, GFP_KERNEL);
if (!config_buf)
return -ENOMEM;
result = cp210x_read_vendor_block(serial,
REQTYPE_DEVICE_TO_HOST,
CP210X_READ_2NCONFIG,
config_buf,
config_size);
if (result < 0) {
kfree(config_buf);
return result;
}
config_version = config_buf[CP210X_2NCONFIG_CONFIG_VERSION_IDX];
gpio_pushpull = config_buf[CP210X_2NCONFIG_GPIO_MODE_IDX];
gpio_ctrl = config_buf[CP210X_2NCONFIG_GPIO_CONTROL_IDX];
gpio_rst_latch = config_buf[CP210X_2NCONFIG_GPIO_RSTLATCH_IDX];
kfree(config_buf);
/* Make sure this is a config format we understand. */
if (config_version != 0x01)
return -ENOTSUPP;
/*
* We only support 4 GPIOs even on the QFN28 package, because
* config locations of GPIOs 4-6 determined using reverse
* engineering revealed conflicting offsets with other
* documented functions. So we'll just play it safe for now.
*/
priv->gc.ngpio = 4;
/*
* Get default pin states after reset. Needed so we can determine
* the direction of an open-drain pin.
*/
gpio_latch = (gpio_rst_latch >> 3) & 0x0f;
/* 0 indicates open-drain mode, 1 is push-pull */
priv->gpio_pushpull = (gpio_pushpull >> 3) & 0x0f;
/* 0 indicates GPIO mode, 1 is alternate function */
priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f;
/*
* The CP2102N does not strictly has input and output pin modes,
* it only knows open-drain and push-pull modes which is set at
* factory. An open-drain pin can function both as an
* input or an output. We emulate input mode for open-drain pins
* by making sure they are not driven low, and we do not allow
* push-pull pins to be set as an input.
*/
for (i = 0; i < priv->gc.ngpio; ++i) {
/*
* Set direction to "input" iff pin is open-drain and reset
* value is 1.
*/
if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i)))
priv->gpio_input |= BIT(i);
}
return 0;
}
static int cp210x_gpio_init(struct usb_serial *serial)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
int result;
switch (priv->partnum) {
case CP210X_PARTNUM_CP2105:
result = cp2105_gpioconf_init(serial);
break;
case CP210X_PARTNUM_CP2102N_QFN28:
case CP210X_PARTNUM_CP2102N_QFN24:
case CP210X_PARTNUM_CP2102N_QFN20:
result = cp2102n_gpioconf_init(serial);
break;
default:
return 0;
}
if (result < 0)
return result;
priv->gc.label = "cp210x";
priv->gc.request = cp210x_gpio_request;
priv->gc.get_direction = cp210x_gpio_direction_get;
@ -1452,7 +1667,7 @@ static void cp210x_gpio_remove(struct usb_serial *serial)
#else
static int cp2105_shared_gpio_init(struct usb_serial *serial)
static int cp210x_gpio_init(struct usb_serial *serial)
{
return 0;
}
@ -1497,6 +1712,50 @@ static int cp210x_port_remove(struct usb_serial_port *port)
return 0;
}
static void cp210x_init_max_speed(struct usb_serial *serial)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
bool use_actual_rate = false;
speed_t max;
switch (priv->partnum) {
case CP210X_PARTNUM_CP2101:
max = 921600;
break;
case CP210X_PARTNUM_CP2102:
case CP210X_PARTNUM_CP2103:
max = 1000000;
break;
case CP210X_PARTNUM_CP2104:
use_actual_rate = true;
max = 2000000;
break;
case CP210X_PARTNUM_CP2108:
max = 2000000;
break;
case CP210X_PARTNUM_CP2105:
if (cp210x_interface_num(serial) == 0) {
use_actual_rate = true;
max = 2000000; /* ECI */
} else {
max = 921600; /* SCI */
}
break;
case CP210X_PARTNUM_CP2102N_QFN28:
case CP210X_PARTNUM_CP2102N_QFN24:
case CP210X_PARTNUM_CP2102N_QFN20:
use_actual_rate = true;
max = 3000000;
break;
default:
max = 2000000;
break;
}
priv->max_speed = max;
priv->use_actual_rate = use_actual_rate;
}
static int cp210x_attach(struct usb_serial *serial)
{
int result;
@ -1517,12 +1776,12 @@ static int cp210x_attach(struct usb_serial *serial)
usb_set_serial_data(serial, priv);
if (priv->partnum == CP210X_PARTNUM_CP2105) {
result = cp2105_shared_gpio_init(serial);
if (result < 0) {
dev_err(&serial->interface->dev,
"GPIO initialisation failed, continuing without GPIO support\n");
}
cp210x_init_max_speed(serial);
result = cp210x_gpio_init(serial);
if (result < 0) {
dev_err(&serial->interface->dev, "GPIO initialisation failed: %d\n",
result);
}
return 0;

17
drivers/usb/serial/cyberjack.c
View File

@ -255,6 +255,7 @@ static void cyberjack_read_int_callback(struct urb *urb)
struct device *dev = &port->dev;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
unsigned long flags;
int result;
/* the urb might have been killed. */
@ -270,13 +271,13 @@ static void cyberjack_read_int_callback(struct urb *urb)
/* This is a announcement of coming bulk_ins. */
unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3;
spin_lock(&priv->lock);
spin_lock_irqsave(&priv->lock, flags);
old_rdtodo = priv->rdtodo;
if (old_rdtodo > SHRT_MAX - size) {
dev_dbg(dev, "To many bulk_in urbs to do.\n");
spin_unlock(&priv->lock);
spin_unlock_irqrestore(&priv->lock, flags);
goto resubmit;
}
@ -285,7 +286,7 @@ static void cyberjack_read_int_callback(struct urb *urb)
dev_dbg(dev, "%s - rdtodo: %d\n", __func__, priv->rdtodo);
spin_unlock(&priv->lock);
spin_unlock_irqrestore(&priv->lock, flags);
if (!old_rdtodo) {
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
@ -309,6 +310,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb)
struct cyberjack_private *priv = usb_get_serial_port_data(port);
struct device *dev = &port->dev;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
short todo;
int result;
int status = urb->status;
@ -325,7 +327,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb)
tty_flip_buffer_push(&port->port);
}
spin_lock(&priv->lock);
spin_lock_irqsave(&priv->lock, flags);
/* Reduce urbs to do by one. */
priv->rdtodo -= urb->actual_length;
@ -334,7 +336,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb)
priv->rdtodo = 0;
todo = priv->rdtodo;
spin_unlock(&priv->lock);
spin_unlock_irqrestore(&priv->lock, flags);
dev_dbg(dev, "%s - rdtodo: %d\n", __func__, todo);
@ -354,6 +356,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
struct cyberjack_private *priv = usb_get_serial_port_data(port);
struct device *dev = &port->dev;
int status = urb->status;
unsigned long flags;
set_bit(0, &port->write_urbs_free);
if (status) {
@ -362,7 +365,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
return;
}
spin_lock(&priv->lock);
spin_lock_irqsave(&priv->lock, flags);
/* only do something if we have more data to send */
if (priv->wrfilled) {
@ -406,7 +409,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
}
exit:
spin_unlock(&priv->lock);
spin_unlock_irqrestore(&priv->lock, flags);
usb_serial_port_softint(port);
}

35
drivers/usb/serial/digi_acceleport.c
View File

@ -984,6 +984,7 @@ static void digi_write_bulk_callback(struct urb *urb)
struct usb_serial *serial;
struct digi_port *priv;
struct digi_serial *serial_priv;
unsigned long flags;
int ret = 0;
int status = urb->status;
@ -1004,15 +1005,15 @@ static void digi_write_bulk_callback(struct urb *urb)
/* handle oob callback */
if (priv->dp_port_num == serial_priv->ds_oob_port_num) {
dev_dbg(&port->dev, "digi_write_bulk_callback: oob callback\n");
spin_lock(&priv->dp_port_lock);
spin_lock_irqsave(&priv->dp_port_lock, flags);
priv->dp_write_urb_in_use = 0;
wake_up_interruptible(&port->write_wait);
spin_unlock(&priv->dp_port_lock);
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
return;
}
/* try to send any buffered data on this port */
spin_lock(&priv->dp_port_lock);
spin_lock_irqsave(&priv->dp_port_lock, flags);
priv->dp_write_urb_in_use = 0;
if (priv->dp_out_buf_len > 0) {
*((unsigned char *)(port->write_urb->transfer_buffer))
@ -1035,7 +1036,7 @@ static void digi_write_bulk_callback(struct urb *urb)
/* lost the race in write_chan(). */
schedule_work(&priv->dp_wakeup_work);
spin_unlock(&priv->dp_port_lock);
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
if (ret && ret != -EPERM)
dev_err_console(port,
"%s: usb_submit_urb failed, ret=%d, port=%d\n",
@ -1381,11 +1382,12 @@ static int digi_read_inb_callback(struct urb *urb)
struct usb_serial_port *port = urb->context;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *buf = urb->transfer_buffer;
unsigned long flags;
int opcode;
int len;
int port_status;
unsigned char *data;
int flag, throttled;
int tty_flag, throttled;
/* short/multiple packet check */
if (urb->actual_length < 2) {
@ -1407,7 +1409,7 @@ static int digi_read_inb_callback(struct urb *urb)
return -1;
}
spin_lock(&priv->dp_port_lock);
spin_lock_irqsave(&priv->dp_port_lock, flags);
/* check for throttle; if set, do not resubmit read urb */
/* indicate the read chain needs to be restarted on unthrottle */
@ -1421,7 +1423,7 @@ static int digi_read_inb_callback(struct urb *urb)
data = &buf[3];
/* get flag from port_status */
flag = 0;
tty_flag = 0;
/* overrun is special, not associated with a char */
if (port_status & DIGI_OVERRUN_ERROR)
@ -1430,21 +1432,21 @@ static int digi_read_inb_callback(struct urb *urb)
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (port_status & DIGI_BREAK_ERROR)
flag = TTY_BREAK;
tty_flag = TTY_BREAK;
else if (port_status & DIGI_PARITY_ERROR)
flag = TTY_PARITY;
tty_flag = TTY_PARITY;
else if (port_status & DIGI_FRAMING_ERROR)
flag = TTY_FRAME;
tty_flag = TTY_FRAME;
/* data length is len-1 (one byte of len is port_status) */
--len;
if (len > 0) {
tty_insert_flip_string_fixed_flag(&port->port, data,
flag, len);
tty_flag, len);
tty_flip_buffer_push(&port->port);
}
}
spin_unlock(&priv->dp_port_lock);
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
if (opcode == DIGI_CMD_RECEIVE_DISABLE)
dev_dbg(&port->dev, "%s: got RECEIVE_DISABLE\n", __func__);
@ -1474,6 +1476,7 @@ static int digi_read_oob_callback(struct urb *urb)
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *buf = urb->transfer_buffer;
int opcode, line, status, val;
unsigned long flags;
int i;
unsigned int rts;
@ -1506,7 +1509,7 @@ static int digi_read_oob_callback(struct urb *urb)
rts = C_CRTSCTS(tty);
if (tty && opcode == DIGI_CMD_READ_INPUT_SIGNALS) {
spin_lock(&priv->dp_port_lock);
spin_lock_irqsave(&priv->dp_port_lock, flags);
/* convert from digi flags to termiox flags */
if (val & DIGI_READ_INPUT_SIGNALS_CTS) {
priv->dp_modem_signals |= TIOCM_CTS;
@ -1530,12 +1533,12 @@ static int digi_read_oob_callback(struct urb *urb)
else
priv->dp_modem_signals &= ~TIOCM_CD;
spin_unlock(&priv->dp_port_lock);
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
} else if (opcode == DIGI_CMD_TRANSMIT_IDLE) {
spin_lock(&priv->dp_port_lock);
spin_lock_irqsave(&priv->dp_port_lock, flags);
priv->dp_transmit_idle = 1;
wake_up_interruptible(&priv->dp_transmit_idle_wait);
spin_unlock(&priv->dp_port_lock);
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
} else if (opcode == DIGI_CMD_IFLUSH_FIFO) {
wake_up_interruptible(&priv->dp_flush_wait);
}

17
drivers/usb/serial/io_edgeport.c
View File

@ -648,6 +648,7 @@ static void edge_interrupt_callback(struct urb *urb)
struct usb_serial_port *port;
unsigned char *data = urb->transfer_buffer;
int length = urb->actual_length;
unsigned long flags;
int bytes_avail;
int position;
int txCredits;
@ -679,7 +680,7 @@ static void edge_interrupt_callback(struct urb *urb)
if (length > 1) {
bytes_avail = data[0] | (data[1] << 8);
if (bytes_avail) {
spin_lock(&edge_serial->es_lock);
spin_lock_irqsave(&edge_serial->es_lock, flags);
edge_serial->rxBytesAvail += bytes_avail;
dev_dbg(dev,
"%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
@ -702,7 +703,8 @@ static void edge_interrupt_callback(struct urb *urb)
edge_serial->read_in_progress = false;
}
}
spin_unlock(&edge_serial->es_lock);
spin_unlock_irqrestore(&edge_serial->es_lock,
flags);
}
}
/* grab the txcredits for the ports if available */
@ -715,9 +717,11 @@ static void edge_interrupt_callback(struct urb *urb)
port = edge_serial->serial->port[portNumber];
edge_port = usb_get_serial_port_data(port);
if (edge_port->open) {
spin_lock(&edge_port->ep_lock);
spin_lock_irqsave(&edge_port->ep_lock,
flags);
edge_port->txCredits += txCredits;
spin_unlock(&edge_port->ep_lock);
spin_unlock_irqrestore(&edge_port->ep_lock,
flags);
dev_dbg(dev, "%s - txcredits for port%d = %d\n",
__func__, portNumber,
edge_port->txCredits);
@ -758,6 +762,7 @@ static void edge_bulk_in_callback(struct urb *urb)
int retval;
__u16 raw_data_length;
int status = urb->status;
unsigned long flags;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
@ -777,7 +782,7 @@ static void edge_bulk_in_callback(struct urb *urb)
usb_serial_debug_data(dev, __func__, raw_data_length, data);
spin_lock(&edge_serial->es_lock);
spin_lock_irqsave(&edge_serial->es_lock, flags);
/* decrement our rxBytes available by the number that we just got */
edge_serial->rxBytesAvail -= raw_data_length;
@ -801,7 +806,7 @@ static void edge_bulk_in_callback(struct urb *urb)
edge_serial->read_in_progress = false;
}
spin_unlock(&edge_serial->es_lock);
spin_unlock_irqrestore(&edge_serial->es_lock, flags);
}

5
drivers/usb/serial/io_ti.c
View File

@ -1729,6 +1729,7 @@ static void edge_bulk_in_callback(struct urb *urb)
struct edgeport_port *edge_port = urb->context;
struct device *dev = &edge_port->port->dev;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
int retval = 0;
int port_number;
int status = urb->status;
@ -1780,13 +1781,13 @@ static void edge_bulk_in_callback(struct urb *urb)
exit:
/* continue read unless stopped */
spin_lock(&edge_port->ep_lock);
spin_lock_irqsave(&edge_port->ep_lock, flags);
if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
retval = usb_submit_urb(urb, GFP_ATOMIC);
else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
spin_unlock(&edge_port->ep_lock);
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
if (retval)
dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
}

2
drivers/usb/serial/ir-usb.c
View File

@ -132,7 +132,7 @@ irda_usb_find_class_desc(struct usb_serial *serial, unsigned int ifnum)
0, ifnum, desc, sizeof(*desc), 1000);
dev_dbg(&serial->dev->dev, "%s - ret=%d\n", __func__, ret);
if (ret < sizeof(*desc)) {
if (ret < (int)sizeof(*desc)) {
dev_dbg(&serial->dev->dev,
"%s - class descriptor read %s (%d)\n", __func__,
(ret < 0) ? "failed" : "too short", ret);

5
drivers/usb/serial/iuu_phoenix.c
View File

@ -58,7 +58,6 @@ struct iuu_private {
u8 *buf; /* used for initialize speed */
u8 len;
int vcc; /* vcc (either 3 or 5 V) */
u32 baud;
u32 boost;
u32 clk;
};
@ -963,9 +962,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
struct iuu_private *priv = usb_get_serial_port_data(port);
baud = tty->termios.c_ospeed;
tty->termios.c_ispeed = baud;
/* Re-encode speed */
tty_encode_baud_rate(tty, baud, baud);
dev_dbg(dev, "%s - baud %d\n", __func__, baud);
usb_clear_halt(serial->dev, port->write_urb->pipe);
@ -991,7 +987,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
if (boost < 100)
boost = 100;
priv->boost = boost;
priv->baud = baud;
switch (clockmode) {
case 2: /* 3.680 Mhz */
priv->clk = IUU_CLK_3680000;

1
drivers/usb/serial/kl5kusb105.c
View File

@ -67,7 +67,6 @@ static int klsi_105_prepare_write_buffer(struct usb_serial_port *port,
*/
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
{ USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
{ } /* Terminating entry */
};

3
drivers/usb/serial/kl5kusb105.h
View File

@ -7,9 +7,6 @@
#define PALMCONNECT_VID 0x0830
#define PALMCONNECT_PID 0x0080
#define KLSI_VID 0x05e9
#define KLSI_KL5KUSB105D_PID 0x00c0
/* Vendor commands: */

24
drivers/usb/serial/kobil_sct.c
View File

@ -190,8 +190,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
if (result >= 3) {
dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
}
/* get firmware version */
result = usb_control_msg(port->serial->dev,
@ -205,8 +207,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
if (result >= 3) {
dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
}
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
@ -393,12 +397,20 @@ static int kobil_tiocmget(struct tty_struct *tty)
transfer_buffer_length,
KOBIL_TIMEOUT);
dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
__func__, result, transfer_buffer[0]);
dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
result);
if (result < 1) {
if (result >= 0)
result = -EIO;
goto out_free;
}
dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
result = 0;
if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
result = TIOCM_DSR;
out_free:
kfree(transfer_buffer);
return result;
}

14
drivers/usb/serial/mos7720.c
View File

@ -340,14 +340,15 @@ static void async_complete(struct urb *urb)
{
struct urbtracker *urbtrack = urb->context;
int status = urb->status;
unsigned long flags;
if (unlikely(status))
dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
/* remove the urbtracker from the active_urbs list */
spin_lock(&urbtrack->mos_parport->listlock);
spin_lock_irqsave(&urbtrack->mos_parport->listlock, flags);
list_del(&urbtrack->urblist_entry);
spin_unlock(&urbtrack->mos_parport->listlock);
spin_unlock_irqrestore(&urbtrack->mos_parport->listlock, flags);
kref_put(&urbtrack->ref_count, destroy_urbtracker);
}
@ -1526,8 +1527,6 @@ static void change_port_settings(struct tty_struct *tty,
struct usb_serial *serial;
int baud;
unsigned cflag;
unsigned iflag;
__u8 mask = 0xff;
__u8 lData;
__u8 lParity;
__u8 lStop;
@ -1551,23 +1550,19 @@ static void change_port_settings(struct tty_struct *tty,
lParity = 0x00; /* No parity */
cflag = tty->termios.c_cflag;
iflag = tty->termios.c_iflag;
/* Change the number of bits */
switch (cflag & CSIZE) {
case CS5:
lData = UART_LCR_WLEN5;
mask = 0x1f;
break;
case CS6:
lData = UART_LCR_WLEN6;
mask = 0x3f;
break;
case CS7:
lData = UART_LCR_WLEN7;
mask = 0x7f;
break;
default:
case CS8:
@ -1685,11 +1680,8 @@ static void mos7720_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
int status;
struct usb_serial *serial;
struct moschip_port *mos7720_port;
serial = port->serial;
mos7720_port = usb_get_serial_port_data(port);
if (mos7720_port == NULL)

5
drivers/usb/serial/mos7840.c
View File

@ -805,18 +805,19 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
struct moschip_port *mos7840_port;
struct usb_serial_port *port;
int status = urb->status;
unsigned long flags;
int i;
mos7840_port = urb->context;
port = mos7840_port->port;
spin_lock(&mos7840_port->pool_lock);
spin_lock_irqsave(&mos7840_port->pool_lock, flags);
for (i = 0; i < NUM_URBS; i++) {
if (urb == mos7840_port->write_urb_pool[i]) {
mos7840_port->busy[i] = 0;
break;
}
}
spin_unlock(&mos7840_port->pool_lock);
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
if (status) {
dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status);

7
drivers/usb/serial/quatech2.c
View File

@ -194,7 +194,7 @@ static inline int qt2_getregister(struct usb_device *dev,
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
QT_SET_GET_REGISTER, 0xc0, reg,
uart, data, sizeof(*data), QT2_USB_TIMEOUT);
if (ret < sizeof(*data)) {
if (ret < (int)sizeof(*data)) {
if (ret >= 0)
ret = -EIO;
}
@ -621,16 +621,17 @@ static void qt2_write_bulk_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct qt2_port_private *port_priv;
unsigned long flags;
port = urb->context;
port_priv = usb_get_serial_port_data(port);
spin_lock(&port_priv->urb_lock);
spin_lock_irqsave(&port_priv->urb_lock, flags);
port_priv->urb_in_use = false;
usb_serial_port_softint(port);
spin_unlock(&port_priv->urb_lock);
spin_unlock_irqrestore(&port_priv->urb_lock, flags);
}

13
drivers/usb/serial/sierra.c
View File

@ -409,6 +409,7 @@ static void sierra_outdat_callback(struct urb *urb)
struct sierra_port_private *portdata = usb_get_serial_port_data(port);
struct sierra_intf_private *intfdata;
int status = urb->status;
unsigned long flags;
intfdata = usb_get_serial_data(port->serial);
@ -419,12 +420,12 @@ static void sierra_outdat_callback(struct urb *urb)
dev_dbg(&port->dev, "%s - nonzero write bulk status "
"received: %d\n", __func__, status);
spin_lock(&portdata->lock);
spin_lock_irqsave(&portdata->lock, flags);
--portdata->outstanding_urbs;
spin_unlock(&portdata->lock);
spin_lock(&intfdata->susp_lock);
spin_unlock_irqrestore(&portdata->lock, flags);
spin_lock_irqsave(&intfdata->susp_lock, flags);
--intfdata->in_flight;
spin_unlock(&intfdata->susp_lock);
spin_unlock_irqrestore(&intfdata->susp_lock, flags);
usb_serial_port_softint(port);
}
@ -770,9 +771,9 @@ static void sierra_close(struct usb_serial_port *port)
kfree(urb->transfer_buffer);
usb_free_urb(urb);
usb_autopm_put_interface_async(serial->interface);
spin_lock(&portdata->lock);
spin_lock_irq(&portdata->lock);
portdata->outstanding_urbs--;
spin_unlock(&portdata->lock);
spin_unlock_irq(&portdata->lock);
}
sierra_stop_rx_urbs(port);

2
drivers/usb/serial/ssu100.c
View File

@ -104,7 +104,7 @@ static inline int ssu100_getregister(struct usb_device *dev,
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
QT_SET_GET_REGISTER, 0xc0, reg,
uart, data, sizeof(*data), 300);
if (ret < sizeof(*data)) {
if (ret < (int)sizeof(*data)) {
if (ret >= 0)
ret = -EIO;
}

5
drivers/usb/serial/symbolserial.c
View File

@ -35,6 +35,7 @@ static void symbol_int_callback(struct urb *urb)
struct symbol_private *priv = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
unsigned long flags;
int result;
int data_length;
@ -73,7 +74,7 @@ static void symbol_int_callback(struct urb *urb)
}
exit:
spin_lock(&priv->lock);
spin_lock_irqsave(&priv->lock, flags);
/* Continue trying to always read if we should */
if (!priv->throttled) {
@ -84,7 +85,7 @@ static void symbol_int_callback(struct urb *urb)
__func__, result);
} else
priv->actually_throttled = true;
spin_unlock(&priv->lock);
spin_unlock_irqrestore(&priv->lock, flags);
}
static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port)

9
drivers/usb/serial/ti_usb_3410_5052.c
View File

@ -1215,6 +1215,7 @@ static void ti_bulk_in_callback(struct urb *urb)
struct usb_serial_port *port = tport->tp_port;
struct device *dev = &urb->dev->dev;
int status = urb->status;
unsigned long flags;
int retval = 0;
switch (status) {
@ -1247,20 +1248,20 @@ static void ti_bulk_in_callback(struct urb *urb)
__func__);
else
ti_recv(port, urb->transfer_buffer, urb->actual_length);
spin_lock(&tport->tp_lock);
spin_lock_irqsave(&tport->tp_lock, flags);
port->icount.rx += urb->actual_length;
spin_unlock(&tport->tp_lock);
spin_unlock_irqrestore(&tport->tp_lock, flags);
}
exit:
/* continue to read unless stopping */
spin_lock(&tport->tp_lock);
spin_lock_irqsave(&tport->tp_lock, flags);
if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
retval = usb_submit_urb(urb, GFP_ATOMIC);
else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
tport->tp_read_urb_state = TI_READ_URB_STOPPED;
spin_unlock(&tport->tp_lock);
spin_unlock_irqrestore(&tport->tp_lock, flags);
if (retval)
dev_err(dev, "%s - resubmit read urb failed, %d\n",
__func__, retval);

5
drivers/usb/serial/usb_wwan.c
View File

@ -326,6 +326,7 @@ static void usb_wwan_outdat_callback(struct urb *urb)
struct usb_serial_port *port;
struct usb_wwan_port_private *portdata;
struct usb_wwan_intf_private *intfdata;
unsigned long flags;
int i;
port = urb->context;
@ -334,9 +335,9 @@ static void usb_wwan_outdat_callback(struct urb *urb)
usb_serial_port_softint(port);
usb_autopm_put_interface_async(port->serial->interface);
portdata = usb_get_serial_port_data(port);
spin_lock(&intfdata->susp_lock);
spin_lock_irqsave(&intfdata->susp_lock, flags);
intfdata->in_flight--;
spin_unlock(&intfdata->susp_lock);
spin_unlock_irqrestore(&intfdata->susp_lock, flags);
for (i = 0; i < N_OUT_URB; ++i) {
if (portdata->out_urbs[i] == urb) {