serial: delete useless void casts in 8250.c

These might have worked some magic with an ancient gcc back in
1992, but "objdump --disassemble" on gcc 4.6 on x86-64 shows
identical output before and after this commit.  Send the casts
and their hysterical rasins to the bitbucket.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 4009e2438e40e1a2608d89dff85c437c946802e2..6a71716111aec12f2293de23ee55339284cc4bae 100644 (file)
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -1218,7 +1218,7 @@ static void autoconfig_irq(struct uart_8250_port *up)
                ICP = (up->port.iobase & 0xfe0) | 0x1f;
                save_ICP = inb_p(ICP);
                outb_p(0x80, ICP);
-               (void) inb_p(ICP);
+               inb_p(ICP);
        }
 
        /* forget possible initially masked and pending IRQ */
@@ -1238,10 +1238,10 @@ static void autoconfig_irq(struct uart_8250_port *up)
                            UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
        }
        serial_out(up, UART_IER, 0x0f); /* enable all intrs */
-       (void)serial_in(up, UART_LSR);
-       (void)serial_in(up, UART_RX);
-       (void)serial_in(up, UART_IIR);
-       (void)serial_in(up, UART_MSR);
+       serial_in(up, UART_LSR);
+       serial_in(up, UART_RX);
+       serial_in(up, UART_IIR);
+       serial_in(up, UART_MSR);
        serial_out(up, UART_TX, 0xFF);
        udelay(20);
        irq = probe_irq_off(irqs);
@@ -1973,10 +1973,10 @@ static int serial8250_startup(struct uart_port *port)
        /*
         * Clear the interrupt registers.
         */
-       (void) serial_in(up, UART_LSR);
-       (void) serial_in(up, UART_RX);
-       (void) serial_in(up, UART_IIR);
-       (void) serial_in(up, UART_MSR);
+       serial_in(up, UART_LSR);
+       serial_in(up, UART_RX);
+       serial_in(up, UART_IIR);
+       serial_in(up, UART_MSR);
 
        /*
         * At this point, there's no way the LSR could still be 0xff;
@@ -2152,7 +2152,7 @@ dont_test_tx_en:
                 */
                icp = (up->port.iobase & 0xfe0) | 0x01f;
                outb_p(0x80, icp);
-               (void) inb_p(icp);
+               inb_p(icp);
        }
 
        return 0;
@@ -2198,7 +2198,7 @@ static void serial8250_shutdown(struct uart_port *port)
         * Read data port to reset things, and then unlink from
         * the IRQ chain.
         */
-       (void) serial_in(up, UART_RX);
+       serial_in(up, UART_RX);
 
        del_timer_sync(&up->timer);
        up->timer.function = serial8250_timeout;