USB: serial: io_edgeport: fix memory leaks in probe error path
URBs and buffers allocated in attach for Epic devices would never be
deallocated in case of a later probe error (e.g. failure to allocate
minor numbers) as disconnect is then never called.
Fix by moving deallocation to release and making sure that the
URBs are first unlinked.
Fixes: f9c99bb8b3
("USB: usb-serial: replace shutdown with disconnect,
release")
Cc: stable <stable@vger.kernel.org> # v2.6.31
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
c5c0c55598
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@ -2959,16 +2959,9 @@ static void edge_disconnect(struct usb_serial *serial)
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{
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struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
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/* stop reads and writes on all ports */
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/* free up our endpoint stuff */
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if (edge_serial->is_epic) {
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usb_kill_urb(edge_serial->interrupt_read_urb);
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usb_free_urb(edge_serial->interrupt_read_urb);
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kfree(edge_serial->interrupt_in_buffer);
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usb_kill_urb(edge_serial->read_urb);
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usb_free_urb(edge_serial->read_urb);
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kfree(edge_serial->bulk_in_buffer);
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}
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}
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@ -2981,6 +2974,16 @@ static void edge_release(struct usb_serial *serial)
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{
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struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
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if (edge_serial->is_epic) {
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usb_kill_urb(edge_serial->interrupt_read_urb);
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usb_free_urb(edge_serial->interrupt_read_urb);
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kfree(edge_serial->interrupt_in_buffer);
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usb_kill_urb(edge_serial->read_urb);
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usb_free_urb(edge_serial->read_urb);
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kfree(edge_serial->bulk_in_buffer);
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}
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kfree(edge_serial);
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}
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