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USB: serial: use kmemdup instead of kmalloc + memcpy

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For code neat purpose, we can use kmemdup to replace
kmalloc + memcpy.

Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Slark Xiao 2022-06-22 14:21:13 +08:00 committed by Johan Hovold
parent a111daf0c5
commit 7828466cff
3 changed files with 3 additions and 9 deletions
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4
drivers/usb/serial/garmin_gps.c
View File

@ -988,7 +988,7 @@ static int garmin_write_bulk(struct usb_serial_port *port,
garmin_data_p->flags &= ~FLAGS_DROP_DATA;
spin_unlock_irqrestore(&garmin_data_p->lock, flags);
buffer = kmalloc(count, GFP_ATOMIC);
buffer = kmemdup(buf, count, GFP_ATOMIC);
if (!buffer)
return -ENOMEM;
@ -998,8 +998,6 @@ static int garmin_write_bulk(struct usb_serial_port *port,
return -ENOMEM;
}
memcpy(buffer, buf, count);
usb_serial_debug_data(&port->dev, __func__, count, buffer);
usb_fill_bulk_urb(urb, serial->dev,

4
drivers/usb/serial/opticon.c
View File

@ -208,7 +208,7 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
priv->outstanding_bytes += count;
spin_unlock_irqrestore(&priv->lock, flags);
buffer = kmalloc(count, GFP_ATOMIC);
buffer = kmemdup(buf, count, GFP_ATOMIC);
if (!buffer)
goto error_no_buffer;
@ -216,8 +216,6 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
if (!urb)
goto error_no_urb;
memcpy(buffer, buf, count);
usb_serial_debug_data(&port->dev, __func__, count, buffer);
/* The connected devices do not have a bulk write endpoint,

4
drivers/usb/serial/sierra.c
View File

@ -453,7 +453,7 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
goto error_simple;
}
buffer = kmalloc(writesize, GFP_ATOMIC);
buffer = kmemdup(buf, writesize, GFP_ATOMIC);
if (!buffer) {
retval = -ENOMEM;
goto error_no_buffer;
@ -465,8 +465,6 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
goto error_no_urb;
}
memcpy(buffer, buf, writesize);
usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
usb_fill_bulk_urb(urb, serial->dev,