hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

USB: mos7840: remove unused code 

There is old, unused code that is #defined out by the use of NOTMOS7840
and NOTMCS7840 - these are 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@canonical.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Colin Ian King 2015-01-19 13:32:58 +00:00 committed by Johan Hovold
parent 46dc0fc4be
commit 3e264ffc83
1 changed files with 0 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/usb/serial/mos7840.c
View File

@ -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;
@ -1614,37 +1585,6 @@ static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port,
*clk_sel_val = 0x70;
}
return 0;
#ifdef NOTMCS7840
for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) {
if (mos7840_divisor_table[i].BaudRate == baudrate) {
*divisor = mos7840_divisor_table[i].Divisor;
return 0;
}
}
/* After trying for all the standard baud rates *
* Try calculating the divisor for this baud rate */
if (baudrate > 75 && baudrate < 230400) {
/* get the divisor */
custom = (__u16) (230400L / baudrate);
/* Check for round off */
round1 = (__u16) (2304000L / baudrate);
round = (__u16) (round1 - (custom * 10));
if (round > 4)
custom++;
*divisor = custom;
dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom);
return 0;
}
dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n");
return -1;
#endif
}
/*****************************************************************************