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Commit 716e115c authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Greg Kroah-Hartman
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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: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6fa62fc4

drivers/tty/serial/8250/8250_pci.c

+0 −13
Original line number Diff line number Diff line
@@ -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);

}