@@ -271,11 +271,12 @@ static void cyberjack_read_int_callback(struct urb *urb)
/* React only to interrupts signaling a bulk_in transfer */
if (urb->actual_length == 4 && data[0] == 0x01) {
short old_rdtodo;
+ unsigned long flags;
/* 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;
@@ -290,7 +291,7 @@ 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);
@@ -317,6 +318,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb)
short todo;
int result;
int status = urb->status;
+ unsigned long flags;
usb_serial_debug_data(dev, __func__, urb->actual_length, data);
if (status) {
@@ -330,7 +332,7 @@ 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;
@@ -339,7 +341,7 @@ 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);
@@ -359,6 +361,7 @@ 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) {
@@ -367,7 +370,7 @@ 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) {
@@ -411,7 +414,7 @@ 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);
}
Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> --- drivers/usb/serial/cyberjack.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)