3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jan Safrata <jan.nikite...@gmail.com>
commit 0658a3366db7e27fa32c12e886230bb58c414c92 upstream.
The use of kfree(serial) in error cases of usb_serial_probe
was invalid - usb_serial structure allocated in create_serial()
gets reference of usb_device that needs to be put, so we need
to use usb_serial_put() instead of simple kfree().
Signed-off-by: Jan Safrata <jan.nikite...@gmail.com>
Acked-by: Johan Hovold <jhov...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/usb/serial/usb-serial.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 6e8c527..27483f9 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -757,7 +757,7 @@ static int usb_serial_probe(struct usb_interface *interface,
if (retval) {
dbg("sub driver rejected device");
- kfree(serial);
+ usb_serial_put(serial);
module_put(type->driver.owner);
return retval;
}
@@ -829,7 +829,7 @@ static int usb_serial_probe(struct usb_interface *interface,
*/
if (num_bulk_in == 0 || num_bulk_out == 0) {
dev_info(&interface->dev, "PL-2303 hack: descriptors
matched but endpoints did not\n");
- kfree(serial);
+ usb_serial_put(serial);
module_put(type->driver.owner);
return -ENODEV;
}
@@ -843,7 +843,7 @@ static int usb_serial_probe(struct usb_interface *interface,
if (num_ports == 0) {
dev_err(&interface->dev,
"Generic device with no bulk out, not allowed.\n");
- kfree(serial);
+ usb_serial_put(serial);
module_put(type->driver.owner);
return -EIO;
}
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