openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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 <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rupesh Gujare 2013-08-05 18:40:12 +01:00 committed by Greg Kroah-Hartman
parent b2271b5bdf
commit bc9aece00a
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/staging/ozwpan/ozhcd.c
View File

@ -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); oz_free_urb_link(urbl);
return 0; return 0;
} }
if (in_dir) if (in_dir && port->in_ep[ep_addr])
ep = 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]; ep = port->out_ep[ep_addr];
else {
err = -ENOMEM;
goto out;
}
/*For interrupt endpoint check for buffered data /*For interrupt endpoint check for buffered data
* & complete urb * & complete urb
@ -505,6 +509,7 @@ static int oz_enqueue_ep_urb(struct oz_port *port, u8 ep_addr, int in_dir,
} else { } else {
err = -EPIPE; err = -EPIPE;
} }
out:
spin_unlock_bh(&port->ozhcd->hcd_lock); spin_unlock_bh(&port->ozhcd->hcd_lock);
if (err) if (err)
oz_free_urb_link(urbl); oz_free_urb_link(urbl);