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| H A D | ehci-hcd.c | 85b3e780a7ef93d2c49b867945f60c83a42a8de7 Mon Nov 20 18:33:39 UTC 2017 Heinrich Schuchardt <xypron.glpk@gmx.de> UPSTREAM: dm: usb: ehci: avoid possible NULL dereference
Currently we check in ehci_shutdown() if ctrl is NULL after
dereferencing it.
Before this we have already dereferenced ctrl, ctrl->hccr,
and ctrl->hcor in ehci_get_portsc_register(), ehci_submit_root(),
and hci_common_init().
A better approach is to already check ctrl, ctrl->hccr, and ctrl->hcor
during the initialization in ehci_register() and usb_lowlevel_init()
and signal an error here via the return code.
Change-Id: I940999cbb94fbae4642fd25df820997c4d642da1
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
(cherry picked from commit 45157d27644c23493ea1b5a6c9dd67572eb75c8c)
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