linux-kernel - [PATCH 2/4] serial: 8250_uniphier: fix clearing divisor latch access bit

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Message-Id: <1477296030-7517-3-git-send-email-yamada.masahiro@socionext.com>
Date:   Mon, 24 Oct 2016 17:00:28 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-serial@...r.kernel.org
Cc:     Denys Vlasenko <dvlasenk@...hat.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 2/4] serial: 8250_uniphier: fix clearing divisor latch access bit

At this point, 'value' is always a byte, then this code is clearing
bit 15, which is already clear.  I meant to clear bit 7.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Reported-by: Denys Vlasenko <dvlasenk@...hat.com>
---

 drivers/tty/serial/8250/8250_uniphier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index a8babb0..417d9e7 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -99,7 +99,7 @@ static void uniphier_serial_out(struct uart_port *p, int offset, int value)
 	case UART_LCR:
 		valshift = UNIPHIER_UART_LCR_SHIFT;
 		/* Divisor latch access bit does not exist. */
-		value &= ~(UART_LCR_DLAB << valshift);
+		value &= ~UART_LCR_DLAB;
 		/* fall through */
 	case UART_MCR:
 		offset = UNIPHIER_UART_LCR_MCR;
-- 
1.9.1