Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index ed2b4e6..0af7680 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -41,6 +41,9 @@
bool rts;
bool cts;
int outstanding_urbs;
+ int outstanding_bytes;
+
+ struct usb_anchor anchor;
};
@@ -149,6 +152,15 @@
return res;
}
+static void opticon_close(struct usb_serial_port *port)
+{
+ struct opticon_private *priv = usb_get_serial_port_data(port);
+
+ usb_kill_anchored_urbs(&priv->anchor);
+
+ usb_serial_generic_close(port);
+}
+
static void opticon_write_control_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
@@ -169,6 +181,7 @@
spin_lock_irqsave(&priv->lock, flags);
--priv->outstanding_urbs;
+ priv->outstanding_bytes -= urb->transfer_buffer_length;
spin_unlock_irqrestore(&priv->lock, flags);
usb_serial_port_softint(port);
@@ -182,8 +195,8 @@
struct urb *urb;
unsigned char *buffer;
unsigned long flags;
- int status;
struct usb_ctrlrequest *dr;
+ int ret = -ENOMEM;
spin_lock_irqsave(&priv->lock, flags);
if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
@@ -192,19 +205,16 @@
return 0;
}
priv->outstanding_urbs++;
+ priv->outstanding_bytes += count;
spin_unlock_irqrestore(&priv->lock, flags);
buffer = kmalloc(count, GFP_ATOMIC);
- if (!buffer) {
- count = -ENOMEM;
+ if (!buffer)
goto error_no_buffer;
- }
urb = usb_alloc_urb(0, GFP_ATOMIC);
- if (!urb) {
- count = -ENOMEM;
+ if (!urb)
goto error_no_urb;
- }
memcpy(buffer, buf, count);
@@ -213,10 +223,8 @@
/* The connected devices do not have a bulk write endpoint,
* to transmit data to de barcode device the control endpoint is used */
dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
- if (!dr) {
- count = -ENOMEM;
+ if (!dr)
goto error_no_dr;
- }
dr->bRequestType = USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT;
dr->bRequest = 0x01;
@@ -229,13 +237,13 @@
(unsigned char *)dr, buffer, count,
opticon_write_control_callback, port);
+ usb_anchor_urb(urb, &priv->anchor);
+
/* send it down the pipe */
- status = usb_submit_urb(urb, GFP_ATOMIC);
- if (status) {
- dev_err(&port->dev,
- "%s - usb_submit_urb(write endpoint) failed status = %d\n",
- __func__, status);
- count = status;
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret) {
+ dev_err(&port->dev, "failed to submit write urb: %d\n", ret);
+ usb_unanchor_urb(urb);
goto error;
}
@@ -253,8 +261,10 @@
error_no_buffer:
spin_lock_irqsave(&priv->lock, flags);
--priv->outstanding_urbs;
+ priv->outstanding_bytes -= count;
spin_unlock_irqrestore(&priv->lock, flags);
- return count;
+
+ return ret;
}
static int opticon_write_room(struct tty_struct *tty)
@@ -279,6 +289,20 @@
return 2048;
}
+static int opticon_chars_in_buffer(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct opticon_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ int count;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ count = priv->outstanding_bytes;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return count;
+}
+
static int opticon_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
@@ -354,6 +378,7 @@
return -ENOMEM;
spin_lock_init(&priv->lock);
+ init_usb_anchor(&priv->anchor);
usb_set_serial_port_data(port, priv);
@@ -381,8 +406,10 @@
.port_probe = opticon_port_probe,
.port_remove = opticon_port_remove,
.open = opticon_open,
+ .close = opticon_close,
.write = opticon_write,
.write_room = opticon_write_room,
+ .chars_in_buffer = opticon_chars_in_buffer,
.throttle = usb_serial_generic_throttle,
.unthrottle = usb_serial_generic_unthrottle,
.get_serial = get_serial_info,