linux-kernel - [PATCH v1 11/13] serial: 8250_exar: Use BIT() in exar_ee

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Date: Thu,  2 May 2024 17:44:05 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Parker Newman <pnewman@...necttech.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>
Subject: [PATCH v1 11/13] serial: 8250_exar: Use BIT() in exar_ee_read()

Use BIT() in exar_ee_read() like other functions do.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/tty/serial/8250/8250_exar.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 306bc6d7c141..bf3730f4231d 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -340,13 +340,13 @@ static u16 exar_ee_read(struct exar8250 *priv, u8 ee_addr)
 	exar_ee_write_bit(priv, 0);
 
 	// Send address to read from
-	for (i = 1 << (UART_EXAR_REGB_EE_ADDR_SIZE - 1); i; i >>= 1)
-		exar_ee_write_bit(priv, (ee_addr & i));
+	for (i = UART_EXAR_REGB_EE_ADDR_SIZE - 1; i >= 0; i--)
+		exar_ee_write_bit(priv, ee_addr & BIT(i));
 
 	// Read data 1 bit at a time
 	for (i = 0; i <= UART_EXAR_REGB_EE_DATA_SIZE; i++) {
-		data <<= 1;
-		data |= exar_ee_read_bit(priv);
+		if (exar_ee_read_bit(priv))
+			data |= BIT(i);
 	}
 
 	exar_ee_deselect(priv);
-- 
2.43.0.rc1.1336.g36b5255a03ac