USB: usb_wwan: fix potential NULL-deref at resume

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commit 9096f1fbba upstream.

The interrupt urb was submitted unconditionally at resume, something
which could lead to a NULL-pointer dereference in the urb completion
handler as resume may be called after the port and port data is gone.

Fix this by making sure the interrupt urb is only submitted and active
when the port is open.

Fixes: 383cedc3bb ("USB: serial: full autosuspend support for the
option driver")

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2014-05-26 19:23:17 +02:00 • committed by Greg Kroah-Hartman

parent 21286f6f66

commit b284256354

1 changed files with 19 additions and 24 deletions

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drivers/usb/serial/usb_wwan.c

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