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Prashanth K e60a827ac0 usb: gadget: u_serial: Add null pointer check in gserial_suspend

[ Upstream commit 2f6ecb89fe ]

Consider a case where gserial_disconnect has already cleared
gser->ioport. And if gserial_suspend gets called afterwards,
it will lead to accessing of gser->ioport and thus causing
null pointer dereference.

Avoid this by adding a null pointer check. Added a static
spinlock to prevent gser->ioport from becoming null after
the newly added null pointer check.

Fixes: aba3a8d01d ("usb: gadget: u_serial: add suspend resume callbacks")
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Link: https://lore.kernel.org/r/1683278317-11774-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-07-19 16:21:52 +02:00

atm

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c67x00

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cdns3

usb: cdns3: fix NCM gadget RX speed 20x slow than expection at iMX8QM

2023-06-09 10:34:20 +02:00

chipidea

usb: chipidea: fix missing goto in ci_hdrc_probe

2023-05-11 23:03:30 +09:00

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