linux-kernel - [PATCH v2 12/17] serial: max310x: replace hardcoded masks with preferred GENMASK()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu, 18 Jan 2024 10:22:08 -0500
From: Hugo Villeneuve <hugo@...ovil.com>
To: gregkh@...uxfoundation.org,
	jirislaby@...nel.org,
	cosmin.tanislav@...log.com,
	andy.shevchenko@...il.com,
	shc_work@...l.ru
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	hugo@...ovil.com,
	Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH v2 12/17] serial: max310x: replace hardcoded masks with preferred GENMASK()

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

GENMASK() is preferred when defining bitmasks.

Of all the masks changed, only MAX310x_REV_MASK is actually used.

No functional change.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 drivers/tty/serial/max310x.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 701bf54e4084..c93b326faf89 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -161,14 +161,14 @@
 #define MAX310X_IRDA_SIR_BIT		(1 << 1) /* SIR mode enable */
 
 /* Flow control trigger level register masks */
-#define MAX310X_FLOWLVL_HALT_MASK	(0x000f) /* Flow control halt level */
-#define MAX310X_FLOWLVL_RES_MASK	(0x00f0) /* Flow control resume level */
+#define MAX310X_FLOWLVL_HALT_MASK	GENMASK(3, 0) /* Flow control halt level */
+#define MAX310X_FLOWLVL_RES_MASK	GENMASK(7, 4) /* Flow control resume level */
 #define MAX310X_FLOWLVL_HALT(words)	((words / 8) & 0x0f)
 #define MAX310X_FLOWLVL_RES(words)	(((words / 8) & 0x0f) << 4)
 
 /* FIFO interrupt trigger level register masks */
-#define MAX310X_FIFOTRIGLVL_TX_MASK	(0x0f) /* TX FIFO trigger level */
-#define MAX310X_FIFOTRIGLVL_RX_MASK	(0xf0) /* RX FIFO trigger level */
+#define MAX310X_FIFOTRIGLVL_TX_MASK	GENMASK(3, 0) /* TX FIFO trigger level */
+#define MAX310X_FIFOTRIGLVL_RX_MASK	GENMASK(7, 4) /* RX FIFO trigger level */
 #define MAX310X_FIFOTRIGLVL_TX(words)	((words / 8) & 0x0f)
 #define MAX310X_FIFOTRIGLVL_RX(words)	(((words / 8) & 0x0f) << 4)
 
@@ -215,8 +215,8 @@
 						  */
 
 /* PLL configuration register masks */
-#define MAX310X_PLLCFG_PREDIV_MASK	(0x3f) /* PLL predivision value */
-#define MAX310X_PLLCFG_PLLFACTOR_MASK	(0xc0) /* PLL multiplication factor */
+#define MAX310X_PLLCFG_PREDIV_MASK	GENMASK(5, 0) /* PLL predivision value */
+#define MAX310X_PLLCFG_PLLFACTOR_MASK	GENMASK(7, 6) /* PLL multiplication factor */
 
 /* Baud rate generator configuration register bits */
 #define MAX310X_BRGCFG_2XMODE_BIT	(1 << 4) /* Double baud rate */
@@ -235,7 +235,7 @@
 
 /* Misc definitions */
 #define MAX310X_FIFO_SIZE		(128)
-#define MAX310x_REV_MASK		(0xf8)
+#define MAX310x_REV_MASK		GENMASK(7, 3)
 #define MAX310X_WRITE_BIT		0x80
 
 /* MAX3107 specific */
-- 
2.39.2