On 20. 05. 21, 4:13, Andrew Jeffery wrote:
BIT(x) improves readability and safety with respect to shifts.
Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx>
Reviewed-by: Jiri Slaby <jirislaby@xxxxxxxxxx>
---
drivers/tty/serial/8250/8250.h | 33 +++++++++++++++++----------------
1 file changed, 17 insertions(+), 16 deletions(-)
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 34aa2714f3c9..6473361525d1 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -7,6 +7,7 @@
* Copyright (C) 2001 Russell King.
*/
+#include <linux/bits.h>
#include <linux/serial_8250.h>
#include <linux/serial_reg.h>
#include <linux/dmaengine.h>
@@ -70,25 +71,25 @@ struct serial8250_config {
unsigned int flags;
};
-#define UART_CAP_FIFO (1 << 8) /* UART has FIFO */
-#define UART_CAP_EFR (1 << 9) /* UART has EFR */
-#define UART_CAP_SLEEP (1 << 10) /* UART has IER sleep */
-#define UART_CAP_AFE (1 << 11) /* MCR-based hw flow control */
-#define UART_CAP_UUE (1 << 12) /* UART needs IER bit 6 set (Xscale) */
-#define UART_CAP_RTOIE (1 << 13) /* UART needs IER bit 4 set (Xscale, Tegra) */
-#define UART_CAP_HFIFO (1 << 14) /* UART has a "hidden" FIFO */
-#define UART_CAP_RPM (1 << 15) /* Runtime PM is active while idle */
-#define UART_CAP_IRDA (1 << 16) /* UART supports IrDA line discipline */
-#define UART_CAP_MINI (1 << 17) /* Mini UART on BCM283X family lacks:
+#define UART_CAP_FIFO BIT(8) /* UART has FIFO */
+#define UART_CAP_EFR BIT(9) /* UART has EFR */
+#define UART_CAP_SLEEP BIT(10) /* UART has IER sleep */
+#define UART_CAP_AFE BIT(11) /* MCR-based hw flow control */
+#define UART_CAP_UUE BIT(12) /* UART needs IER bit 6 set (Xscale) */
+#define UART_CAP_RTOIE BIT(13) /* UART needs IER bit 4 set (Xscale, Tegra) */
+#define UART_CAP_HFIFO BIT(14) /* UART has a "hidden" FIFO */
+#define UART_CAP_RPM BIT(15) /* Runtime PM is active while idle */
+#define UART_CAP_IRDA BIT(16) /* UART supports IrDA line discipline */
+#define UART_CAP_MINI BIT(17) /* Mini UART on BCM283X family lacks:
* STOP PARITY EPAR SPAR WLEN5 WLEN6
*/
-#define UART_BUG_QUOT (1 << 0) /* UART has buggy quot LSB */
-#define UART_BUG_TXEN (1 << 1) /* UART has buggy TX IIR status */
-#define UART_BUG_NOMSR (1 << 2) /* UART has buggy MSR status bits (Au1x00) */
-#define UART_BUG_THRE (1 << 3) /* UART has buggy THRE reassertion */
-#define UART_BUG_PARITY (1 << 4) /* UART mishandles parity if FIFO enabled */
-#define UART_BUG_TXRACE (1 << 5) /* UART Tx fails to set remote DR */
+#define UART_BUG_QUOT BIT(0) /* UART has buggy quot LSB */
+#define UART_BUG_TXEN BIT(1) /* UART has buggy TX IIR status */
+#define UART_BUG_NOMSR BIT(2) /* UART has buggy MSR status bits (Au1x00) */
+#define UART_BUG_THRE BIT(3) /* UART has buggy THRE reassertion */
+#define UART_BUG_PARITY BIT(4) /* UART mishandles parity if FIFO enabled */
+#define UART_BUG_TXRACE BIT(5) /* UART Tx fails to set remote DR */
#ifdef CONFIG_SERIAL_8250_SHARE_IRQ
--
js
suse labs
