USB: serial: mos7720: fix mos_parport refcount imbalance on error path

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commit 2908b076f5 upstream.

The write_parport_reg_nonblock() helper takes a reference to the struct
mos_parport, but failed to release it in a couple of error paths after
allocation failures, leading to a memory leak.

Johan said that move the kref_get() and mos_parport assignment to the
end of urbtrack initialisation is a better way, so move it. and
mos_parport do not used until urbtrack initialisation.

Signed-off-by: Lin Yi <teroincn@163.com>
Fixes: b69578df7e ("USB: usbserial: mos7720: add support for parallel port on moschip 7715")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Lin Yi 2019-03-20 19:04:56 +08:00 • committed by Ben Hutchings

parent 919f489774

commit 83ffc8b8e4

1 changed files with 2 additions and 2 deletions

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drivers/usb/serial/mos7720.c

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