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Albert Wang 0755f3f322 usb: dwc3: gadget: Fix null pointer exception

commit 26288448120b28af1dfd85a6fa6b6d55a16c7f2f upstream.

In the endpoint interrupt functions
dwc3_gadget_endpoint_transfer_in_progress() and
dwc3_gadget_endpoint_trbs_complete() will dereference the endpoint
descriptor. But it could be cleared in __dwc3_gadget_ep_disable()
when accessory disconnected. So we need to check whether it is null
or not before dereferencing it.

Fixes: f09ddcfcb8c5 ("usb: dwc3: gadget: Prevent EP queuing while stopping transfers")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Jack Pham <quic_jackp@quicinc.com>
Signed-off-by: Albert Wang <albertccwang@google.com>
Link: https://lore.kernel.org/r/20211109092642.3507692-1-albertccwang@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-12-01 09:18:59 +01:00

core.c

usb: dwc3: core: balance phy init and exit

2021-09-30 10:11:00 +02:00

core.h

usb: dwc3: core: Do core softreset when switch mode

2021-05-11 14:47:39 +02:00

debug.h

usb: dwc3: debugfs: Add and remove endpoint dirs dynamically

2021-06-23 14:42:54 +02:00

debugfs.c

usb: dwc3: debugfs: Add and remove endpoint dirs dynamically