tty: serial: samsung: change has_divslot type to bool

Since the driver was introduced the port features flags never extended.
As we don't expect more flags soon that would bypass the first
cacheline of ``struct s3c24xx_uart_info``, change the type of
``has_divslot`` to bool. Bitfields operations incur performance penalty
when set or read as compared to direct types.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20240119104526.1221243-19-tudor.ambarus@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index c429029..0a03df4 100644 (file)
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -89,8 +89,7 @@ struct s3c24xx_uart_info {
        u8                      iotype;
 
        /* uart port features */
-
-       unsigned int            has_divslot:1;
+       bool                    has_divslot;
 };
 
 struct s3c24xx_serial_drv_data {
@@ -2400,7 +2399,7 @@ static const struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
                .port_type      = PORT_S3C6400,
                .iotype         = UPIO_MEM,
                .fifosize       = 64,
-               .has_divslot    = 1,
+               .has_divslot    = true,
                .rx_fifomask    = S3C2440_UFSTAT_RXMASK,
                .rx_fifoshift   = S3C2440_UFSTAT_RXSHIFT,
                .rx_fifofull    = S3C2440_UFSTAT_RXFULL,
@@ -2429,7 +2428,7 @@ static const struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
                .type           = TYPE_S3C6400,
                .port_type      = PORT_S3C6400,
                .iotype         = UPIO_MEM,
-               .has_divslot    = 1,
+               .has_divslot    = true,
                .rx_fifomask    = S5PV210_UFSTAT_RXMASK,
                .rx_fifoshift   = S5PV210_UFSTAT_RXSHIFT,
                .rx_fifofull    = S5PV210_UFSTAT_RXFULL,
@@ -2459,7 +2458,7 @@ static const struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
                .type           = TYPE_S3C6400,                 \
                .port_type      = PORT_S3C6400,                 \
                .iotype         = UPIO_MEM,                     \
-               .has_divslot    = 1,                            \
+               .has_divslot    = true,                         \
                .rx_fifomask    = S5PV210_UFSTAT_RXMASK,        \
                .rx_fifoshift   = S5PV210_UFSTAT_RXSHIFT,       \
                .rx_fifofull    = S5PV210_UFSTAT_RXFULL,        \
@@ -2498,7 +2497,7 @@ static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = {
                .type           = TYPE_S3C6400,
                .port_type      = PORT_S3C6400,
                .iotype         = UPIO_MEM32,
-               .has_divslot    = 1,
+               .has_divslot    = true,
                .rx_fifomask    = S5PV210_UFSTAT_RXMASK,
                .rx_fifoshift   = S5PV210_UFSTAT_RXSHIFT,
                .rx_fifofull    = S5PV210_UFSTAT_RXFULL,
@@ -2569,7 +2568,7 @@ static const struct s3c24xx_serial_drv_data artpec8_serial_drv_data = {
                .port_type      = PORT_S3C6400,
                .iotype         = UPIO_MEM,
                .fifosize       = 64,
-               .has_divslot    = 1,
+               .has_divslot    = true,
                .rx_fifomask    = S5PV210_UFSTAT_RXMASK,
                .rx_fifoshift   = S5PV210_UFSTAT_RXSHIFT,
                .rx_fifofull    = S5PV210_UFSTAT_RXFULL,