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authorJohan Hovold <johan@kernel.org>2016-05-08 20:07:57 +0200
committerJohan Hovold <johan@kernel.org>2016-05-10 09:39:30 +0200
commitc8d62957d450cc1a22ce3242908709fe367ddc8e (patch)
tree255ab9aafe012abcefae82d9e9500c2eda951f85 /drivers/usb/serial
parentc5c0c55598cefc826d6cfb0a417eeaee3631715c (diff)
downloadblackbird-op-linux-c8d62957d450cc1a22ce3242908709fe367ddc8e.tar.gz
blackbird-op-linux-c8d62957d450cc1a22ce3242908709fe367ddc8e.zip
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: f9c99bb8b3a1 ("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>
Diffstat (limited to 'drivers/usb/serial')
-rw-r--r--drivers/usb/serial/io_edgeport.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index edd568bc0de5..11c05ce2f35f 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -2959,16 +2959,9 @@ static void edge_disconnect(struct usb_serial *serial)
{
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
- /* stop reads and writes on all ports */
- /* free up our endpoint stuff */
if (edge_serial->is_epic) {
usb_kill_urb(edge_serial->interrupt_read_urb);
- usb_free_urb(edge_serial->interrupt_read_urb);
- kfree(edge_serial->interrupt_in_buffer);
-
usb_kill_urb(edge_serial->read_urb);
- usb_free_urb(edge_serial->read_urb);
- kfree(edge_serial->bulk_in_buffer);
}
}
@@ -2981,6 +2974,16 @@ static void edge_release(struct usb_serial *serial)
{
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+ if (edge_serial->is_epic) {
+ usb_kill_urb(edge_serial->interrupt_read_urb);
+ usb_free_urb(edge_serial->interrupt_read_urb);
+ kfree(edge_serial->interrupt_in_buffer);
+
+ usb_kill_urb(edge_serial->read_urb);
+ usb_free_urb(edge_serial->read_urb);
+ kfree(edge_serial->bulk_in_buffer);
+ }
+
kfree(edge_serial);
}
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