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serial: 8250_pci: remove rts_n override from Baytrail quirk 

It should not be used together with Auto Flow Control, and
Auto Flow Control is always enabled on Baytrail.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2014-09-11 15:26:12 +03:00 committed by Greg Kroah-Hartman
parent 6fa62fc46e
commit 716e115cd7
1 changed files with 0 additions and 13 deletions
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13
drivers/tty/serial/8250/8250_pci.c
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@ -1355,9 +1355,6 @@ ce4100_serial_setup(struct serial_private *priv,
#define BYT_PRV_CLK_N_VAL_SHIFT 16
#define BYT_PRV_CLK_UPDATE (1 << 31)
#define BYT_GENERAL_REG 0x808
#define BYT_GENERAL_DIS_RTS_N_OVERRIDE (1 << 3)
#define BYT_TX_OVF_INT 0x820
#define BYT_TX_OVF_INT_MASK (1 << 1)
@ -1412,16 +1409,6 @@ byt_set_termios(struct uart_port *p, struct ktermios *termios,
reg |= BYT_PRV_CLK_EN | BYT_PRV_CLK_UPDATE;
writel(reg, p->membase + BYT_PRV_CLK);
/*
* If auto-handshake mechanism is not enabled,
* disable rts_n override
*/
reg = readl(p->membase + BYT_GENERAL_REG);
reg &= ~BYT_GENERAL_DIS_RTS_N_OVERRIDE;
if (termios->c_cflag & CRTSCTS)
reg |= BYT_GENERAL_DIS_RTS_N_OVERRIDE;
writel(reg, p->membase + BYT_GENERAL_REG);
serial8250_do_set_termios(p, termios, old);
}