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-rw-r--r--drivers/usb/serial/aircable.c10
-rw-r--r--drivers/usb/serial/cp210x.c1
-rw-r--r--drivers/usb/serial/cypress_m8.c12
-rw-r--r--drivers/usb/serial/digi_acceleport.c8
-rw-r--r--drivers/usb/serial/empeg.c2
-rw-r--r--drivers/usb/serial/ftdi_sio.c422
-rw-r--r--drivers/usb/serial/garmin_gps.c12
-rw-r--r--drivers/usb/serial/generic.c2
-rw-r--r--drivers/usb/serial/ipaq.c9
-rw-r--r--drivers/usb/serial/keyspan_pda.c2
-rw-r--r--drivers/usb/serial/kl5kusb105.c2
-rw-r--r--drivers/usb/serial/mct_u232.c14
-rw-r--r--drivers/usb/serial/opticon.c13
-rw-r--r--drivers/usb/serial/option.c12
-rw-r--r--drivers/usb/serial/oti6858.c6
-rw-r--r--drivers/usb/serial/pl2303.c8
-rw-r--r--drivers/usb/serial/sierra.c45
-rw-r--r--drivers/usb/serial/symbolserial.c22
-rw-r--r--drivers/usb/serial/usb-serial.c24
-rw-r--r--drivers/usb/serial/visor.c28
-rw-r--r--drivers/usb/serial/whiteheat.c10
21 files changed, 268 insertions, 396 deletions
diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index 2cbfab3716e..b10ac840941 100644
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -554,13 +554,12 @@ static void aircable_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct aircable_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->rx_lock, flags);
+ spin_lock_irq(&priv->rx_lock);
priv->rx_flags |= THROTTLED;
- spin_unlock_irqrestore(&priv->rx_lock, flags);
+ spin_unlock_irq(&priv->rx_lock);
}
/* Based on ftdi_sio.c unthrottle */
@@ -569,14 +568,13 @@ static void aircable_unthrottle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct aircable_private *priv = usb_get_serial_port_data(port);
int actually_throttled;
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->rx_lock, flags);
+ spin_lock_irq(&priv->rx_lock);
actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
- spin_unlock_irqrestore(&priv->rx_lock, flags);
+ spin_unlock_irq(&priv->rx_lock);
if (actually_throttled)
schedule_work(&priv->rx_work);
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 4a208fe85bc..698252a4dc5 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -113,6 +113,7 @@ static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
{ USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
{ USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
+ { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
{ } /* Terminating Entry */
};
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index e0a8b715f2f..a591ebec0f8 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1155,13 +1155,12 @@ static void cypress_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct cypress_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->rx_flags = THROTTLED;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
@@ -1170,14 +1169,13 @@ static void cypress_unthrottle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct cypress_private *priv = usb_get_serial_port_data(port);
int actually_throttled, result;
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
priv->rx_flags = 0;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
if (!priv->comm_is_ok)
return;
@@ -1185,7 +1183,7 @@ static void cypress_unthrottle(struct tty_struct *tty)
if (actually_throttled) {
port->interrupt_in_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (result) {
dev_err(&port->dev, "%s - failed submitting read urb, "
"error %d\n", __func__, result);
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index ab3dd991586..68e80be6b9e 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -898,16 +898,16 @@ static void digi_rx_unthrottle(struct tty_struct *tty)
spin_lock_irqsave(&priv->dp_port_lock, flags);
- /* turn throttle off */
- priv->dp_throttled = 0;
- priv->dp_throttle_restart = 0;
-
/* restart read chain */
if (priv->dp_throttle_restart) {
port->read_urb->dev = port->serial->dev;
ret = usb_submit_urb(port->read_urb, GFP_ATOMIC);
}
+ /* turn throttle off */
+ priv->dp_throttled = 0;
+ priv->dp_throttle_restart = 0;
+
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
if (ret)
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c
index 33c9e9cf9eb..7dd0e3eadbe 100644
--- a/drivers/usb/serial/empeg.c
+++ b/drivers/usb/serial/empeg.c
@@ -391,7 +391,7 @@ static void empeg_unthrottle(struct tty_struct *tty)
dbg("%s - port %d", __func__, port->number);
port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result)
dev_err(&port->dev,
"%s - failed submitting read urb, error %d\n",
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 4f883b1773d..9c60d6d4908 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -76,13 +76,7 @@ struct ftdi_private {
unsigned long last_dtr_rts; /* saved modem control outputs */
wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
char prev_status, diff_status; /* Used for TIOCMIWAIT */
- __u8 rx_flags; /* receive state flags (throttling) */
- spinlock_t rx_lock; /* spinlock for receive state */
- struct delayed_work rx_work;
struct usb_serial_port *port;
- int rx_processed;
- unsigned long rx_bytes;
-
__u16 interface; /* FT2232C, FT2232H or FT4232H port interface
(0 for FT232/245) */
@@ -737,10 +731,6 @@ static const char *ftdi_chip_name[] = {
/* Constants for read urb and write urb */
#define BUFSZ 512
-/* rx_flags */
-#define THROTTLED 0x01
-#define ACTUALLY_THROTTLED 0x02
-
/* Used for TIOCMIWAIT */
#define FTDI_STATUS_B0_MASK (FTDI_RS0_CTS | FTDI_RS0_DSR | FTDI_RS0_RI | FTDI_RS0_RLSD)
#define FTDI_STATUS_B1_MASK (FTDI_RS_BI)
@@ -763,7 +753,7 @@ static int ftdi_write_room(struct tty_struct *tty);
static int ftdi_chars_in_buffer(struct tty_struct *tty);
static void ftdi_write_bulk_callback(struct urb *urb);
static void ftdi_read_bulk_callback(struct urb *urb);
-static void ftdi_process_read(struct work_struct *work);
+static void ftdi_process_read(struct usb_serial_port *port);
static void ftdi_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static int ftdi_tiocmget(struct tty_struct *tty, struct file *file);
@@ -1234,7 +1224,6 @@ static int set_serial_info(struct tty_struct *tty,
(new_serial.flags & ASYNC_FLAGS));
priv->custom_divisor = new_serial.custom_divisor;
- tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
write_latency_timer(port);
check_and_exit:
@@ -1527,7 +1516,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
}
kref_init(&priv->kref);
- spin_lock_init(&priv->rx_lock);
spin_lock_init(&priv->tx_lock);
init_waitqueue_head(&priv->delta_msr_wait);
/* This will push the characters through immediately rather
@@ -1549,7 +1537,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
port->read_urb->transfer_buffer_length = BUFSZ;
}
- INIT_DELAYED_WORK(&priv->rx_work, ftdi_process_read);
priv->port = port;
/* Free port's existing write urb and transfer buffer. */
@@ -1686,6 +1673,26 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port)
return 0;
}
+static int ftdi_submit_read_urb(struct usb_serial_port *port, gfp_t mem_flags)
+{
+ struct urb *urb = port->read_urb;
+ struct usb_serial *serial = port->serial;
+ int result;
+
+ usb_fill_bulk_urb(urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev,
+ port->bulk_in_endpointAddress),
+ urb->transfer_buffer,
+ urb->transfer_buffer_length,
+ ftdi_read_bulk_callback, port);
+ result = usb_submit_urb(urb, mem_flags);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
+ __func__, result);
+ return result;
+}
+
static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
{ /* ftdi_open */
struct usb_device *dev = port->serial->dev;
@@ -1700,12 +1707,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
spin_lock_irqsave(&priv->tx_lock, flags);
priv->tx_bytes = 0;
spin_unlock_irqrestore(&priv->tx_lock, flags);
- spin_lock_irqsave(&priv->rx_lock, flags);
- priv->rx_bytes = 0;
- spin_unlock_irqrestore(&priv->rx_lock, flags);
-
- if (tty)
- tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
write_latency_timer(port);
@@ -1725,23 +1726,14 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
ftdi_set_termios(tty, port, tty->termios);
/* Not throttled */
- spin_lock_irqsave(&priv->rx_lock, flags);
- priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
- spin_unlock_irqrestore(&priv->rx_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
+ port->throttled = 0;
+ port->throttle_req = 0;
+ spin_unlock_irqrestore(&port->lock, flags);
/* Start reading from the device */
- priv->rx_processed = 0;
- usb_fill_bulk_urb(port->read_urb, dev,
- usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- ftdi_read_bulk_callback, port);
- result = usb_submit_urb(port->read_urb, GFP_KERNEL);
- if (result)
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
- __func__, result);
- else
+ result = ftdi_submit_read_urb(port, GFP_KERNEL);
+ if (!result)
kref_get(&priv->kref);
return result;
@@ -1787,10 +1779,6 @@ static void ftdi_close(struct usb_serial_port *port)
dbg("%s", __func__);
-
- /* cancel any scheduled reading */
- cancel_delayed_work_sync(&priv->rx_work);
-
/* shutdown our bulk read */
usb_kill_urb(port->read_urb);
kref_put(&priv->kref, ftdi_sio_priv_release);
@@ -2013,271 +2001,121 @@ static int ftdi_chars_in_buffer(struct tty_struct *tty)
return buffered;
}
-static void ftdi_read_bulk_callback(struct urb *urb)
+static int ftdi_process_packet(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ftdi_private *priv,
+ char *packet, int len)
{
- struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
- struct ftdi_private *priv;
- unsigned long countread;
- unsigned long flags;
- int status = urb->status;
-
- if (urb->number_of_packets > 0) {
- dev_err(&port->dev, "%s transfer_buffer_length %d "
- "actual_length %d number of packets %d\n", __func__,
- urb->transfer_buffer_length,
- urb->actual_length, urb->number_of_packets);
- dev_err(&port->dev, "%s transfer_flags %x\n", __func__,
- urb->transfer_flags);
- }
+ int i;
+ char status;
+ char flag;
+ char *ch;
dbg("%s - port %d", __func__, port->number);
- if (port->port.count <= 0)
- return;
-
- tty = tty_port_tty_get(&port->port);
- if (!tty) {
- dbg("%s - bad tty pointer - exiting", __func__);
- return;
+ if (len < 2) {
+ dbg("malformed packet");
+ return 0;
}
- priv = usb_get_serial_port_data(port);
- if (!priv) {
- dbg("%s - bad port private data pointer - exiting", __func__);
- goto out;
+ /* Compare new line status to the old one, signal if different/
+ N.B. packet may be processed more than once, but differences
+ are only processed once. */
+ status = packet[0] & FTDI_STATUS_B0_MASK;
+ if (status != priv->prev_status) {
+ priv->diff_status |= status ^ priv->prev_status;
+ wake_up_interruptible(&priv->delta_msr_wait);
+ priv->prev_status = status;
}
- if (urb != port->read_urb)
- dev_err(&port->dev, "%s - Not my urb!\n", __func__);
-
- if (status) {
- /* This will happen at close every time so it is a dbg not an
- err */
- dbg("(this is ok on close) nonzero read bulk status received: %d", status);
- goto out;
+ /*
+ * Although the device uses a bitmask and hence can have multiple
+ * errors on a packet - the order here sets the priority the error is
+ * returned to the tty layer.
+ */
+ flag = TTY_NORMAL;
+ if (packet[1] & FTDI_RS_OE) {
+ flag = TTY_OVERRUN;
+ dbg("OVERRRUN error");
+ }
+ if (packet[1] & FTDI_RS_BI) {
+ flag = TTY_BREAK;
+ dbg("BREAK received");
+ usb_serial_handle_break(port);
+ }
+ if (packet[1] & FTDI_RS_PE) {
+ flag = TTY_PARITY;
+ dbg("PARITY error");
+ }
+ if (packet[1] & FTDI_RS_FE) {
+ flag = TTY_FRAME;
+ dbg("FRAMING error");
}
- /* count data bytes, but not status bytes */
- countread = urb->actual_length;
- countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size);
- spin_lock_irqsave(&priv->rx_lock, flags);
- priv->rx_bytes += countread;
- spin_unlock_irqrestore(&priv->rx_lock, flags);
-
- ftdi_process_read(&priv->rx_work.work);
-out:
- tty_kref_put(tty);
-} /* ftdi_read_bulk_callback */
-
+ len -= 2;
+ if (!len)
+ return 0; /* status only */
+ ch = packet + 2;
+
+ if (!(port->console && port->sysrq) && flag == TTY_NORMAL)
+ tty_insert_flip_string(tty, ch, len);
+ else {
+ for (i = 0; i < len; i++, ch++) {
+ if (!usb_serial_handle_sysrq_char(tty, port, *ch))
+ tty_insert_flip_char(tty, *ch, flag);
+ }
+ }
+ return len;
+}
-static void ftdi_process_read(struct work_struct *work)
-{ /* ftdi_process_read */
- struct ftdi_private *priv =
- container_of(work, struct ftdi_private, rx_work.work);
- struct usb_serial_port *port = priv->port;
- struct urb *urb;
+static void ftdi_process_read(struct usb_serial_port *port)
+{
+ struct urb *urb = port->read_urb;
struct tty_struct *tty;
- char error_flag;
- unsigned char *data;
-
+ struct ftdi_private *priv = usb_get_serial_port_data(port);
+ char *data = (char *)urb->transfer_buffer;
int i;
- int result;
- int need_flip;
- int packet_offset;
- unsigned long flags;
-
- dbg("%s - port %d", __func__, port->number);
-
- if (port->port.count <= 0)
- return;
+ int len;
+ int count = 0;
tty = tty_port_tty_get(&port->port);
- if (!tty) {
- dbg("%s - bad tty pointer - exiting", __func__);
+ if (!tty)
return;
- }
-
- priv = usb_get_serial_port_data(port);
- if (!priv) {
- dbg("%s - bad port private data pointer - exiting", __func__);
- goto out;
- }
-
- urb = port->read_urb;
- if (!urb) {
- dbg("%s - bad read_urb pointer - exiting", __func__);
- goto out;
- }
-
- data = urb->transfer_buffer;
- if (priv->rx_processed) {
- dbg("%s - already processed: %d bytes, %d remain", __func__,
- priv->rx_processed,
- urb->actual_length - priv->rx_processed);
- } else {
- /* The first two bytes of every read packet are status */
- if (urb->actual_length > 2)
- usb_serial_debug_data(debug, &port->dev, __func__,
- urb->actual_length, data);
- else
- dbg("Status only: %03oo %03oo", data[0], data[1]);
+ for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
+ len = min_t(int, urb->actual_length - i, priv->max_packet_size);
+ count += ftdi_process_packet(tty, port, priv, &data[i], len);
}
-
- /* TO DO -- check for hung up line and handle appropriately: */
- /* send hangup */
- /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
- /* if CD is dropped and the line is not CLOCAL then we should hangup */
-
- need_flip = 0;
- for (packet_offset = priv->rx_processed;
- packet_offset < urb->actual_length; packet_offset += priv->max_packet_size) {
- int length;
-
- /* Compare new line status to the old one, signal if different/
- N.B. packet may be processed more than once, but differences
- are only processed once. */
- char new_status = data[packet_offset + 0] &
- FTDI_STATUS_B0_MASK;
- if (new_status != priv->prev_status) {
- priv->diff_status |=
- new_status ^ priv->prev_status;
- wake_up_interruptible(&priv->delta_msr_wait);
- priv->prev_status = new_status;
- }
-
- length = min_t(u32, priv->max_packet_size, urb->actual_length-packet_offset)-2;
- if (length < 0) {
- dev_err(&port->dev, "%s - bad packet length: %d\n",
- __func__, length+2);
- length = 0;
- }
-
- if (priv->rx_flags & THROTTLED) {
- dbg("%s - throttled", __func__);
- break;
- }
- if (tty_buffer_request_room(tty, length) < length) {
- /* break out & wait for throttling/unthrottling to
- happen */
- dbg("%s - receive room low", __func__);
- break;
- }
-
- /* Handle errors and break */
- error_flag = TTY_NORMAL;
- /* Although the device uses a bitmask and hence can have
- multiple errors on a packet - the order here sets the
- priority the error is returned to the tty layer */
-
- if (data[packet_offset+1] & FTDI_RS_OE) {
- error_flag = TTY_OVERRUN;
- dbg("OVERRRUN error");
- }
- if (data[packet_offset+1] & FTDI_RS_BI) {
- error_flag = TTY_BREAK;
- dbg("BREAK received");
- usb_serial_handle_break(port);
- }
- if (data[packet_offset+1] & FTDI_RS_PE) {
- error_flag = TTY_PARITY;
- dbg("PARITY error");
- }
- if (data[packet_offset+1] & FTDI_RS_FE) {
- error_flag = TTY_FRAME;
- dbg("FRAMING error");
- }
- if (length > 0) {
- for (i = 2; i < length+2; i++) {
- /* Note that the error flag is duplicated for
- every character received since we don't know
- which character it applied to */
- if (!usb_serial_handle_sysrq_char(tty, port,
- data[packet_offset + i]))
- tty_insert_flip_char(tty,
- data[packet_offset + i],
- error_flag);
- }
- need_flip = 1;
- }
-
-#ifdef NOT_CORRECT_BUT_KEEPING_IT_FOR_NOW
- /* if a parity error is detected you get status packets forever
- until a character is sent without a parity error.
- This doesn't work well since the application receives a
- never ending stream of bad data - even though new data
- hasn't been sent. Therefore I (bill) have taken this out.
- However - this might make sense for framing errors and so on
- so I am leaving the code in for now.
- */
- else {
- if (error_flag != TTY_NORMAL) {
- dbg("error_flag is not normal");
- /* In this case it is just status - if that is
- an error send a bad character */
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- tty_flip_buffer_push(tty);
- tty_insert_flip_char(tty, 0xff, error_flag);
- need_flip = 1;
- }
- }
-#endif
- } /* "for(packet_offset=0..." */
-
- /* Low latency */
- if (need_flip)
+ if (count)
tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+}
- if (packet_offset < urb->actual_length) {
- /* not completely processed - record progress */
- priv->rx_processed = packet_offset;
- dbg("%s - incomplete, %d bytes processed, %d remain",
- __func__, packet_offset,
- urb->actual_length - packet_offset);
- /* check if we were throttled while processing */
- spin_lock_irqsave(&priv->rx_lock, flags);
- if (priv->rx_flags & THROTTLED) {
- priv->rx_flags |= ACTUALLY_THROTTLED;
- spin_unlock_irqrestore(&priv->rx_lock, flags);
- dbg("%s - deferring remainder until unthrottled",
- __func__);
- goto out;
- }
- spin_unlock_irqrestore(&priv->rx_lock, flags);
- /* if the port is closed stop trying to read */
- if (port->port.count > 0)
- /* delay processing of remainder */
- schedule_delayed_work(&priv->rx_work, 1);
- else
- dbg("%s - port is closed", __func__);
- goto out;
- }
-
- /* urb is completely processed */
- priv->rx_processed = 0;
+static void ftdi_read_bulk_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ unsigned long flags;
- /* if the port is closed stop trying to read */
- if (port->port.count > 0) {
- /* Continue trying to always read */
- usb_fill_bulk_urb(port->read_urb, port->serial->dev,
- usb_rcvbulkpipe(port->serial->dev,
- port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- ftdi_read_bulk_callback, port);
+ dbg("%s - port %d", __func__, port->number);
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
- if (result)
- dev_err(&port->dev,
- "%s - failed resubmitting read urb, error %d\n",
- __func__, result);
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d",
+ __func__, urb->status);
+ return;
}
-out:
- tty_kref_put(tty);
-} /* ftdi_process_read */
+ usb_serial_debug_data(debug, &port->dev, __func__,
+ urb->actual_length, urb->transfer_buffer);
+ ftdi_process_read(port);
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->throttled = port->throttle_req;
+ if (!port->throttled) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ ftdi_submit_read_urb(port, GFP_ATOMIC);
+ } else
+ spin_unlock_irqrestore(&port->lock, flags);
+}
static void ftdi_break_ctl(struct tty_struct *tty, int break_state)
{
@@ -2609,33 +2447,31 @@ static int ftdi_ioctl(struct tty_struct *tty, struct file *file,
static void ftdi_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
- struct ftdi_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->rx_lock, flags);
- priv->rx_flags |= THROTTLED;
- spin_unlock_irqrestore(&priv->rx_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
+ port->throttle_req = 1;
+ spin_unlock_irqrestore(&port->lock, flags);
}
-
-static void ftdi_unthrottle(struct tty_struct *tty)
+void ftdi_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
- struct ftdi_private *priv = usb_get_serial_port_data(port);
- int actually_throttled;
+ int was_throttled;
unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->rx_lock, flags);
- actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
- priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
- spin_unlock_irqrestore(&priv->rx_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
+ was_throttled = port->throttled;
+ port->throttled = port->throttle_req = 0;
+ spin_unlock_irqrestore(&port->lock, flags);
- if (actually_throttled)
- schedule_delayed_work(&priv->rx_work, 0);
+ /* Resubmit urb if throttled and open. */
+ if (was_throttled && test_bit(ASYNCB_INITIALIZED, &port->port.flags))
+ ftdi_submit_read_urb(port, GFP_KERNEL);
}
static int __init ftdi_init(void)
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 20432d34552..5ac900e5a50 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -1390,14 +1390,13 @@ static void garmin_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
/* set flag, data received will be put into a queue
for later processing */
- spin_lock_irqsave(&garmin_data_p->lock, flags);
+ spin_lock_irq(&garmin_data_p->lock);
garmin_data_p->flags |= FLAGS_QUEUING|FLAGS_THROTTLED;
- spin_unlock_irqrestore(&garmin_data_p->lock, flags);
+ spin_unlock_irq(&garmin_data_p->lock);
}
@@ -1405,13 +1404,12 @@ static void garmin_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
- unsigned long flags;
int status;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&garmin_data_p->lock, flags);
+ spin_lock_irq(&garmin_data_p->lock);
garmin_data_p->flags &= ~FLAGS_THROTTLED;
- spin_unlock_irqrestore(&garmin_data_p->lock, flags);
+ spin_unlock_irq(&garmin_data_p->lock);
/* in native mode send queued data to tty, in
serial mode nothing needs to be done here */
@@ -1419,7 +1417,7 @@ static void garmin_unthrottle(struct tty_struct *tty)
garmin_flush_queue(garmin_data_p);
if (0 != (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) {
- status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ status = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (status)
dev_err(&port->dev,
"%s - failed resubmitting read urb, error %d\n",
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index deba08c7a01..bbe005cefcf 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -546,7 +546,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty)
if (was_throttled) {
/* Resume reading from device */
- usb_serial_generic_resubmit_read_urb(port, GFP_KERNEL);
+ flush_and_resubmit_read_urb(port);
}
}
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index 24fcc64b837..d6231c38813 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -966,6 +966,15 @@ static int ipaq_calc_num_ports(struct usb_serial *serial)
static int ipaq_startup(struct usb_serial *serial)
{
dbg("%s", __func__);
+
+ /* Some of the devices in ipaq_id_table[] are composite, and we
+ * shouldn't bind to all the interfaces. This test will rule out
+ * some obviously invalid possibilities.
+ */
+ if (serial->num_bulk_in < serial->num_ports ||
+ serial->num_bulk_out < serial->num_ports)
+ return -ENODEV;
+
if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
/*
* FIXME: HP iPaq rx3715, possibly others, have 1 config that
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 257c16cc6b2..1296a097f5c 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -290,7 +290,7 @@ static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
/* just restart the receive interrupt URB */
dbg("keyspan_pda_rx_unthrottle port %d", port->number);
port->interrupt_in_urb->dev = port->serial->dev;
- if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
+ if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL))
dbg(" usb_submit_urb(read urb) failed");
return;
}
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index f7373371b13..3a7873806f4 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -951,7 +951,7 @@ static void klsi_105_unthrottle(struct tty_struct *tty)
dbg("%s - port %d", __func__, port->number);
port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result)
dev_err(&port->dev,
"%s - failed submitting read urb, error %d\n",
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index ad4998bbf16..cd009cb280a 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -777,20 +777,19 @@ static void mct_u232_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
unsigned int control_state;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->rx_flags |= THROTTLED;
if (C_CRTSCTS(tty)) {
priv->control_state &= ~TIOCM_RTS;
control_state = priv->control_state;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
(void) mct_u232_set_modem_ctrl(port->serial, control_state);
} else {
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
}
@@ -799,20 +798,19 @@ static void mct_u232_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
unsigned int control_state;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
if ((priv->rx_flags & THROTTLED) && C_CRTSCTS(tty)) {
priv->rx_flags &= ~THROTTLED;
priv->control_state |= TIOCM_RTS;
control_state = priv->control_state;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
(void) mct_u232_set_modem_ctrl(port->serial, control_state);
} else {
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
}
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 1085a577c5c..80f59b6350c 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -314,21 +314,24 @@ static void opticon_unthrottle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct opticon_private *priv = usb_get_serial_data(port->serial);
unsigned long flags;
- int result;
+ int result, was_throttled;
dbg("%s - port %d", __func__, port->number);
spin_lock_irqsave(&priv->lock, flags);
priv->throttled = false;
+ was_throttled = priv->actually_throttled;
priv->actually_throttled = false;
spin_unlock_irqrestore(&priv->lock, flags);
priv->bulk_read_urb->dev = port->serial->dev;
- result = usb_submit_urb(priv->bulk_read_urb, GFP_ATOMIC);
- if (result)
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
+ if (was_throttled) {
+ result = usb_submit_urb(priv->bulk_read_urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
__func__, result);
+ }
}
static int opticon_tiocmget(struct tty_struct *tty, struct file *file)
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index f66e3988321..cd44c68954d 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -165,6 +165,7 @@ static int option_resume(struct usb_serial *serial);
#define HUAWEI_PRODUCT_E143D 0x143D
#define HUAWEI_PRODUCT_E143E 0x143E
#define HUAWEI_PRODUCT_E143F 0x143F
+#define HUAWEI_PRODUCT_E14AC 0x14AC
#define QUANTA_VENDOR_ID 0x0408
#define QUANTA_PRODUCT_Q101 0xEA02
@@ -314,10 +315,14 @@ static int option_resume(struct usb_serial *serial);
#define QISDA_PRODUCT_H20_4515 0x4515
#define QISDA_PRODUCT_H20_4519 0x4519
+/* TLAYTECH PRODUCTS */
+#define TLAYTECH_VENDOR_ID 0x20B9
+#define TLAYTECH_PRODUCT_TEU800 0x1682
/* TOSHIBA PRODUCTS */
#define TOSHIBA_VENDOR_ID 0x0930
#define TOSHIBA_PRODUCT_HSDPA_MINICARD 0x1302
+#define TOSHIBA_PRODUCT_G450 0x0d45
#define ALINK_VENDOR_ID 0x1e0e
#define ALINK_PRODUCT_3GU 0x9200
@@ -326,6 +331,9 @@ static int option_resume(struct usb_serial *serial);
#define ALCATEL_VENDOR_ID 0x1bbb
#define ALCATEL_PRODUCT_X060S 0x0000
+/* Airplus products */
+#define AIRPLUS_VENDOR_ID 0x1011
+#define AIRPLUS_PRODUCT_MCD650 0x3198
static struct usb_device_id option_ids[] = {
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
@@ -424,6 +432,7 @@ static struct usb_device_id option_ids[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143D, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143E, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143F, 0xff, 0xff, 0xff) },
+ { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E14AC) },
{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_9508) },
{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V640) }, /* Novatel Merlin V640/XV620 */
{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V620) }, /* Novatel Merlin V620/S620 */
@@ -581,10 +590,13 @@ static struct usb_device_id option_ids[] = {
{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H21_4523) },
{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4515) },
{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4519) },
+ { USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_G450) },
{ USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_HSDPA_MINICARD ) }, /* Toshiba 3G HSDPA == Novatel Expedite EU870D MiniCard */
{ USB_DEVICE(ALINK_VENDOR_ID, 0x9000) },
{ USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) },
{ USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S) },
+ { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) },
+ { USB_DEVICE(TLAYTECH_VENDOR_ID, TLAYTECH_PRODUCT_TEU800) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, option_ids);
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
index 0f4a70ce382..c644e26394b 100644
--- a/drivers/usb/serial/oti6858.c
+++ b/drivers/usb/serial/oti6858.c
@@ -288,7 +288,7 @@ static void setup_line(struct work_struct *work)
dbg("%s(): submitting interrupt urb", __func__);
port->interrupt_in_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (result != 0) {
dev_err(&port->dev, "%s(): usb_submit_urb() failed"
" with error %d\n", __func__, result);
@@ -335,7 +335,7 @@ void send_data(struct work_struct *work)
dbg("%s(): submitting interrupt urb", __func__);
port->interrupt_in_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
if (result != 0) {
dev_err(&port->dev, "%s(): usb_submit_urb() failed"
" with error %d\n", __func__, result);
@@ -349,7 +349,7 @@ void send_data(struct work_struct *work)
port->write_urb->transfer_buffer_length = count;
port->write_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ result = usb_submit_urb(port->write_urb, GFP_NOIO);
if (result != 0) {
dev_err(&port->dev, "%s(): usb_submit_urb() failed"
" with error %d\n", __func__, result);
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 1128e01525b..9ec1a49e236 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -1046,13 +1046,15 @@ static void pl2303_push_data(struct tty_struct *tty,
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- if (port->console && port->sysrq) {
+
+ if (tty_flag == TTY_NORMAL && !(port->console && port->sysrq))
+ tty_insert_flip_string(tty, data, urb->actual_length);
+ else {
int i;
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(tty, port, data[i]))
tty_insert_flip_char(tty, data[i], tty_flag);
- } else
- tty_insert_flip_string(tty, data, urb->actual_length);
+ }
tty_flip_buffer_push(tty);
}
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 68fa0e43b78..5019325ba25 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -17,7 +17,7 @@
Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
*/
-#define DRIVER_VERSION "v.1.3.7"
+#define DRIVER_VERSION "v.1.3.8"
#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
@@ -296,7 +296,6 @@ struct sierra_port_private {
int dsr_state;
int dcd_state;
int ri_state;
-
unsigned int opened:1;
};
@@ -306,6 +305,8 @@ static int sierra_send_setup(struct usb_serial_port *port)
struct sierra_port_private *portdata;
__u16 interface = 0;
int val = 0;
+ int do_send = 0;
+ int retval;
dev_dbg(&port->dev, "%s\n", __func__);
@@ -324,10 +325,7 @@ static int sierra_send_setup(struct usb_serial_port *port)
*/
if (port->interrupt_in_urb) {
/* send control message */
- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 0x22, 0x21, val, interface,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
+ do_send = 1;
}
}
@@ -339,12 +337,18 @@ static int sierra_send_setup(struct usb_serial_port *port)
interface = 1;
else if (port->bulk_out_endpointAddress == 5)
interface = 2;
- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 0x22, 0x21, val, interface,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+ do_send = 1;
}
- return 0;
+ if (!do_send)
+ return 0;
+
+ usb_autopm_get_interface(serial->interface);
+ retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
+ usb_autopm_put_interface(serial->interface);
+
+ return retval;
}
static void sierra_set_termios(struct tty_struct *tty,
@@ -773,8 +777,11 @@ static void sierra_close(struct usb_serial_port *port)
if (serial->dev) {
mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected)
+ if (!serial->disconnected) {
+ serial->interface->needs_remote_wakeup = 0;
+ usb_autopm_get_interface(serial->interface);
sierra_send_setup(port);
+ }
mutex_unlock(&serial->disc_mutex);
spin_lock_irq(&intfdata->susp_lock);
portdata->opened = 0;
@@ -788,8 +795,6 @@ static void sierra_close(struct usb_serial_port *port)
sierra_release_urb(portdata->in_urbs[i]);
portdata->in_urbs[i] = NULL;
}
- usb_autopm_get_interface(serial->interface);
- serial->interface->needs_remote_wakeup = 0;
}
}
@@ -827,6 +832,8 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
if (err) {
/* get rid of everything as in close */
sierra_close(port);
+ /* restore balance for autopm */
+ usb_autopm_put_interface(serial->interface);
return err;
}
sierra_send_setup(port);
@@ -912,9 +919,10 @@ static void sierra_release(struct usb_serial *serial)
}
}
+#ifdef CONFIG_PM
static void stop_read_write_urbs(struct usb_serial *serial)
{
- int i, j;
+ int i;
struct usb_serial_port *port;
struct sierra_port_private *portdata;
@@ -922,8 +930,7 @@ static void stop_read_write_urbs(struct usb_serial *serial)
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
portdata = usb_get_serial_port_data(port);
- for (j = 0; j < N_IN_URB; j++)
- usb_kill_urb(portdata->in_urbs[j]);
+ sierra_stop_rx_urbs(port);
usb_kill_anchored_urbs(&portdata->active);
}
}
@@ -988,6 +995,10 @@ static int sierra_resume(struct usb_serial *serial)
return ec ? -EIO : 0;
}
+#else
+#define sierra_suspend NULL
+#define sierra_resume NULL
+#endif
static struct usb_serial_driver sierra_device = {
.driver = {
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index cb7e95f9fcb..b282c0f2d8e 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -165,34 +165,36 @@ static void symbol_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct symbol_private *priv = usb_get_serial_data(port->serial);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->throttled = true;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
static void symbol_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct symbol_private *priv = usb_get_serial_data(port->serial);
- unsigned long flags;
int result;
+ bool was_throttled;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->throttled = false;
+ was_throttled = priv->actually_throttled;
priv->actually_throttled = false;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
priv->int_urb->dev = port->serial->dev;
- result = usb_submit_urb(priv->int_urb, GFP_ATOMIC);
- if (result)
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
+ if (was_throttled) {
+ result = usb_submit_urb(priv->int_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
__func__, result);
+ }
}
static int symbol_startup(struct usb_serial *serial)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index ff75a3589e7..bd3fa7ff15b 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -156,7 +156,8 @@ static void destroy_serial(struct kref *kref)
if (serial->minor != SERIAL_TTY_NO_MINOR)
return_serial(serial);
- serial->type->release(serial);
+ if (serial->attached)
+ serial->type->release(serial);
/* Now that nothing is using the ports, they can be freed */
for (i = 0; i < serial->num_port_pointers; ++i) {
@@ -192,7 +193,7 @@ void usb_serial_put(struct usb_serial *serial)
* This is the first place a new tty gets used. Hence this is where we
* acquire references to the usb_serial structure and the driver module,
* where we store a pointer to the port, and where we do an autoresume.
- * All these actions are reversed in serial_release().
+ * All these actions are reversed in serial_cleanup().
*/
static int serial_install(struct tty_driver *driver, struct tty_struct *tty)
{
@@ -339,15 +340,16 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
}
/**
- * serial_release - free resources post close/hangup
+ * serial_cleanup - free resources post close/hangup
* @port: port to free up
*
* Do the resource freeing and refcount dropping for the port.
* Avoid freeing the console.
*
- * Called when the last tty kref is dropped.
+ * Called asynchronously after the last tty kref is dropped,
+ * and the tty layer has already done the tty_shutdown(tty);
*/
-static void serial_release(struct tty_struct *tty)
+static void serial_cleanup(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial;
@@ -361,9 +363,6 @@ static void serial_release(struct tty_struct *tty)
dbg("%s - port %d", __func__, port->number);
- /* Standard shutdown processing */
- tty_shutdown(tty);
-
tty->driver_data = NULL;
serial = port->serial;
@@ -1061,12 +1060,15 @@ int usb_serial_probe(struct usb_interface *interface,
module_put(type->driver.owner);
if (retval < 0)
goto probe_error;
+ serial->attached = 1;
if (retval > 0) {
/* quietly accept this device, but don't bind to a
serial port as it's about to disappear */
serial->num_ports = 0;
goto exit;
}
+ } else {
+ serial->attached = 1;
}
if (get_free_serial(serial, num_ports, &minor) == NULL) {
@@ -1166,8 +1168,10 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
if (serial->type->suspend) {
r = serial->type->suspend(serial, message);
- if (r < 0)
+ if (r < 0) {
+ serial->suspending = 0;
goto err_out;
+ }
}
for (i = 0; i < serial->num_ports; ++i) {
@@ -1210,7 +1214,7 @@ static const struct tty_operations serial_ops = {
.chars_in_buffer = serial_chars_in_buffer,
.tiocmget = serial_tiocmget,
.tiocmset = serial_tiocmset,
- .shutdown = serial_release,
+ .cleanup = serial_cleanup,
.install = serial_install,
.proc_fops = &serial_proc_fops,
};
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 1aa5d20a5d9..ad1f9232292 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -513,7 +513,8 @@ static void visor_read_bulk_callback(struct urb *urb)
tty_kref_put(tty);
}
spin_lock(&priv->lock);
- priv->bytes_in += available_room;
+ if (tty)
+ priv->bytes_in += available_room;
} else {
spin_lock(&priv->lock);
@@ -582,12 +583,11 @@ static void visor_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct visor_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->throttled = 1;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
@@ -595,21 +595,23 @@ static void visor_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct visor_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- int result;
+ int result, was_throttled;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
priv->throttled = 0;
+ was_throttled = priv->actually_throttled;
priv->actually_throttled = 0;
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
- port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
- if (result)
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
+ if (was_throttled) {
+ port->read_urb->dev = port->serial->dev;
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
__func__, result);
+ }
}
static int palm_os_3_probe(struct usb_serial *serial,
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 62424eec33e..1093d2eb046 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -949,13 +949,12 @@ static void whiteheat_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct whiteheat_private *info = usb_get_serial_port_data(port);
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&info->lock, flags);
+ spin_lock_irq(&info->lock);
info->flags |= THROTTLED;
- spin_unlock_irqrestore(&info->lock, flags);
+ spin_unlock_irq(&info->lock);
return;
}
@@ -966,14 +965,13 @@ static void whiteheat_unthrottle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct whiteheat_private *info = usb_get_serial_port_data(port);
int actually_throttled;
- unsigned long flags;
dbg("%s - port %d", __func__, port->number);
- spin_lock_irqsave(&info->lock, flags);
+ spin_lock_irq(&info->lock);
actually_throttled = info->flags & ACTUALLY_THROTTLED;
info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
- spin_unlock_irqrestore(&info->lock, flags);
+ spin_unlock_irq(&info->lock);
if (actually_throttled)
rx_data_softint(&info->rx_work);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-11 16:43:34 +0000