Hello Peter Hurley,
This is a semi-automatic email about new static checker warnings.
The patch af224ca2df29: "serial: core: Prevent unsafe uart port
access, part 3" from Apr 9, 2016, leads to the following Smatch
complaint:
drivers/tty/serial/serial_core.c:284 uart_shutdown()
error: we previously assumed 'uport' could be null (see line 280)
drivers/tty/serial/serial_core.c
279 */
280 if (uport && uart_console(uport) && tty)
^^^^^
Patch adds new check for NULL.
281 uport->cons->cflag = tty->termios.c_cflag;
282
283 if (!tty || C_HUPCL(tty))
284 uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
^^^^^
Unchecked dereference (inside function call).
285
286 uart_port_shutdown(port);
regards,
dan carpenter
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