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Jiri Slaby (SUSE)
d7b5876a6e
[ Upstream commit602babaa84] Commitaf224ca2df(serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports. Or it cannot be NULL at this point at all for some reason :P. Until the above is investigated, stay on the safe side and move this dereference to the if too. I got this inconsistency from Coverity under CID 1585130. Thanks. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20240805102046.307511-3-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [Adapted over commit5701cb8bf5("tty: Call ->dtr_rts() parameter active consistently") not in the tree] Signed-off-by: Tomas Krcka <krckatom@amazon.de> Signed-off-by: Sasha Levin <sashal@kernel.org>