patch "serial: imx: Fix DCD reading" added to tty-testing

This is a note to let you know that I've just added the patch titled

serial: imx: Fix DCD reading

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the tty-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Sascha Hauer <[email protected]>
Date: Mon, 26 Sep 2016 15:55:31 +0200
Subject: serial: imx: Fix DCD reading
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The USR2_DCDIN bit is tested for in register usr1. As the name suggests the usr2 register should be used instead. This fixes reading the Carrier detect status.

---
 drivers/tty/serial/imx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index a1d8174a098b..a70356dad1b7 100644
@@ -763,12 +763,13 @@ static unsigned int imx_get_hwmctrl(struct imx_port *sport)
 {
 	unsigned int tmp = TIOCM_DSR;
 	unsigned usr1 = readl(sport->port.membase + USR1);
+	unsigned usr2 = readl(sport->port.membase + USR2);
 
 	if (usr1 & USR1_RTSS)
 		tmp |= TIOCM_CTS;
 
 	/* in DCE mode DCDIN is always 0 */
-	if (!(usr1 & USR2_DCDIN))
+	if (!(usr2 & USR2_DCDIN))
 		tmp |= TIOCM_CAR;
 
 	if (sport->dte_mode)

2.10.0