linux-kernel - [PATCH] drivers/usb/serial/mos7840.c: remove unused code

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-next>] [day] [month] [year] [list]

Message-Id: <1421170905-13233-1-git-send-email-colin.king@canonical.com>
Date:	Tue, 13 Jan 2015 17:41:45 +0000
From:	Colin King <colin.king@...onical.com>
To:	Johan Hovold <johan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] drivers/usb/serial/mos7840.c: remove unused code

From: Colin Ian King <colin.king@...onical.com>

There is old, unused code that is #defined out by the
use of NOTMOS7840 - this is not defined anywhere.  If
NOTMOS7840 is defined then the code will break on null
pointer dereferences on mos7840_port.  So the code is
currently unused, and broken anyway, so why not just
remove it.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/usb/serial/mos7840.c | 29 -----------------------------
 1 file changed, 29 deletions(-)

diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 220b4be..ba718ea 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1309,35 +1309,6 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
 	const unsigned char *current_position = data;
 	unsigned char *data1;
 
-#ifdef NOTMOS7840
-	Data = 0x00;
-	status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
-	mos7840_port->shadowLCR = Data;
-	dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data);
-	dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR);
-
-	/* Data = 0x03; */
-	/* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */
-	/* mos7840_port->shadowLCR=Data;//Need to add later */
-
-	Data |= SERIAL_LCR_DLAB;	/* data latch enable in LCR 0x80 */
-	status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
-
-	/* Data = 0x0c; */
-	/* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */
-	Data = 0x00;
-	status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data);
-	dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data);
-
-	Data = 0x0;
-	status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data);
-	dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data);
-
-	Data = Data & ~SERIAL_LCR_DLAB;
-	dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR);
-	status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
-#endif
-
 	if (mos7840_port_paranoia_check(port, __func__))
 		return -1;
 
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/