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UPSTREAM: usb: raw-gadget: fix null-ptr-deref when reenabling endpoints

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Currently we preassign gadget endpoints to raw-gadget endpoints during
initialization. Fix resetting this assignment in raw_ioctl_ep_disable(),
otherwise we will get null-ptr-derefs when an endpoint is reenabled.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Bug: 147413187
(cherry picked from commit da39b5ee40)
Change-Id: I6809cfdeeadf5fda4071a2f088cd525a1640872d
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
This commit is contained in:
Andrey Konovalov
2020-05-13 20:01:42 +02:00
parent d31e0b95c1
commit c7ee20d570
1 changed files with 0 additions and 1 deletions
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drivers/usb/gadget/legacy/raw_gadget.c
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@@ -867,7 +867,6 @@ static int raw_ioctl_ep_disable(struct raw_dev *dev, unsigned long value)
spin_lock_irqsave(&dev->lock, flags);
usb_ep_free_request(dev->eps[i].ep, dev->eps[i].req);
kfree(dev->eps[i].ep->desc);
dev->eps[i].ep = NULL;
dev->eps[i].state = STATE_EP_DISABLED;
dev->eps[i].disabling = false;