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serial: mps2-uart: Add parentheses around conditional in mps2_uart_shutdown

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Clang warns:

drivers/tty/serial/mps2-uart.c:351:6: warning: logical not is only
applied to the left hand side of this bitwise operator
[-Wlogical-not-parentheses]
        if (!mps_port->flags & UART_PORT_COMBINED_IRQ) {
            ^                ~
drivers/tty/serial/mps2-uart.c:351:6: note: add parentheses after the
'!' to evaluate the bitwise operator first
        if (!mps_port->flags & UART_PORT_COMBINED_IRQ) {
            ^
             (                                       )
drivers/tty/serial/mps2-uart.c:351:6: note: add parentheses around left
hand side expression to silence this warning
        if (!mps_port->flags & UART_PORT_COMBINED_IRQ) {
            ^
            (               )
1 warning generated.

As it was intended for this check to be the inverse of the one at the
bottom of mps2_init_port, add parentheses around the whole conditional.

Fixes: 775ea4ea2f ("serial: mps2-uart: support combined irq")
Signed-off-by: Nathan Chancellor <[email protected]>
Acked-by: Vladimir Murzin <[email protected]>
Link: https://github.com/ClangBuiltLinux/linux/issues/344
Reviewed-by: Nick Desaulniers <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Nathan Chancellor 2019-01-31 11:06:28 -07:00 • committed by Greg Kroah-Hartman
commit 9c6a2583f1
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/mps2-uart.c
View file

@ -348,7 +348,7 @@ static void mps2_uart_shutdown(struct uart_port *port)
mps2_uart_write8(port, control, UARTn_CTRL);
if (!mps_port->flags & UART_PORT_COMBINED_IRQ) {
if (!(mps_port->flags & UART_PORT_COMBINED_IRQ)) {
free_irq(mps_port->rx_irq, mps_port);
free_irq(mps_port->tx_irq, mps_port);
}