diff options
| author | Rohith Seelaboyina <rseelaboyina@nvidia.com> | 2014-01-28 11:59:35 +0530 |
|---|---|---|
| committer | Harry Hong <hhong@nvidia.com> | 2014-02-03 20:04:40 -0800 |
| commit | 2477aa4dd63d241983ed9828c7384970027892c2 (patch) | |
| tree | 37f42fccec89425e67df68a95999a417c0156ecf | |
| parent | 6a27bb299734380573640b2b0e2fdf31f4b8a41c (diff) | |
usb: gadget: tegra: check ep->desc before access
This changes adds condition to check ep->desc
before accessing its contents. ep->desc seems to
get Null on releasing the spin_lock.
Bug 1401730
Change-Id: I48b4c880ced0cd131bd45840839e6635fc1a219c
Signed-off-by: Rohith Seelaboyina <rseelaboyina@nvidia.com>
Reviewed-on: http://git-master/r/362353
(cherry picked from commit 790be48ddf070df3e6357b4e290d8fb4c603a34e)
Reviewed-on: http://git-master/r/363103
Reviewed-by: Harry Hong <hhong@nvidia.com>
Tested-by: Harry Hong <hhong@nvidia.com>
| -rw-r--r-- | drivers/usb/gadget/tegra_udc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/tegra_udc.c b/drivers/usb/gadget/tegra_udc.c index 6bcf279f9855..86e40fde62bb 100644 --- a/drivers/usb/gadget/tegra_udc.c +++ b/drivers/usb/gadget/tegra_udc.c @@ -1135,7 +1135,7 @@ static int tegra_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) /* Enable EP */ out: /* Touch the registers if cable is connected and phy is on */ - if (udc->vbus_active) { + if (udc->vbus_active && ep->desc) { epctrl = udc_readl(udc, EP_CONTROL_REG_OFFSET + (ep_num * 4)); if (ep_is_in(ep)) epctrl |= EPCTRL_TX_ENABLE; |