tty: moxa: fix TIOCSSERIAL permission check

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Changing the port close delay or type are privileged operations so make
sure to return -EPERM if a regular user tries to change them.

Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407102334.32361-12-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2021-04-07 12:23:29 +02:00 • committed by Greg Kroah-Hartman

parent 6e70b73ca5

commit dc8c843765

1 changed files with 11 additions and 5 deletions

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drivers/tty/moxa.c

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