[PATCH 3.16 53/72] wimax: i2400: Fix memory leak in i2400m_op_rfkill_sw_toggle

From: Ben Hutchings
Date: Sun Dec 08 2019 - 08:56:19 EST

3.16.79-rc1 review patch. If anyone has any objections, please let me know.


From: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>

commit 6f3ef5c25cc762687a7341c18cbea5af54461407 upstream.

In the implementation of i2400m_op_rfkill_sw_toggle() the allocated
buffer for cmd should be released before returning. The
documentation for i2400m_msg_to_dev() says when it returns the buffer
can be reused. Meaning cmd should be released in either case. Move
kfree(cmd) before return to be reached by all execution paths.

Fixes: 2507e6ab7a9a ("wimax: i2400: fix memory leak")
Signed-off-by: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
drivers/net/wimax/i2400m/op-rfkill.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wimax/i2400m/op-rfkill.c
+++ b/drivers/net/wimax/i2400m/op-rfkill.c
@@ -142,12 +142,12 @@ int i2400m_op_rfkill_sw_toggle(struct wi
"%d\n", result);
result = 0;
- kfree(cmd);
d_fnend(4, dev, "(wimax_dev %p state %d) = %d\n",
wimax_dev, state, result);
+ kfree(cmd);
return result;