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USB: ir-usb: fix double free

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If the user specifies a custom bulk buffer size we get a double free at
port release.

Cc: stable <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Johan Hovold 2010-05-13 21:02:00 +02:00 • committed by Greg Kroah-Hartman
commit 2ff78c0c2b
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/serial/ir-usb.c
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@ -312,6 +312,7 @@ static int ir_open(struct tty_struct *tty, struct usb_serial_port *port)
kfree(port->read_urb->transfer_buffer);
port->read_urb->transfer_buffer = buffer;
port->read_urb->transfer_buffer_length = buffer_size;
port->bulk_in_buffer = buffer;
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer) {
@ -321,6 +322,7 @@ static int ir_open(struct tty_struct *tty, struct usb_serial_port *port)
kfree(port->write_urb->transfer_buffer);
port->write_urb->transfer_buffer = buffer;
port->write_urb->transfer_buffer_length = buffer_size;
port->bulk_out_buffer = buffer;
port->bulk_out_size = buffer_size;
}