From bc9aece00a7e7ec4b33900a232ca20455ae1f8b9 Mon Sep 17 00:00:00 2001 From: Rupesh Gujare Date: Mon, 5 Aug 2013 18:40:12 +0100 Subject: [PATCH] staging: ozwpan: Fixes crash due to invalid port aceess. This patch fixes kernel crash issue, when we receive URB request after de-enumerating device. Signed-off-by: Rupesh Gujare Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ozwpan/ozhcd.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/staging/ozwpan/ozhcd.c b/drivers/staging/ozwpan/ozhcd.c index ed63868e6027..d313a636f263 100644 --- a/drivers/staging/ozwpan/ozhcd.c +++ b/drivers/staging/ozwpan/ozhcd.c @@ -480,10 +480,14 @@ static int oz_enqueue_ep_urb(struct oz_port *port, u8 ep_addr, int in_dir, oz_free_urb_link(urbl); return 0; } - if (in_dir) + if (in_dir && port->in_ep[ep_addr]) ep = port->in_ep[ep_addr]; - else + else if (!in_dir && port->out_ep[ep_addr]) ep = port->out_ep[ep_addr]; + else { + err = -ENOMEM; + goto out; + } /*For interrupt endpoint check for buffered data * & complete urb @@ -505,6 +509,7 @@ static int oz_enqueue_ep_urb(struct oz_port *port, u8 ep_addr, int in_dir, } else { err = -EPIPE; } +out: spin_unlock_bh(&port->ozhcd->hcd_lock); if (err) oz_free_urb_link(urbl); -- 2.34.1