From: Mark Jackson <mpfj-list@newflow.co.uk>
Date: Thu, 15 Aug 2013 07:53:44 +0000 (+0100)
Subject: OMAP: serial: Remove incorrect disabling of IER interrupt
X-Git-Tag: firefly_0821_release~176^2~5470^2~52
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e438ac9ade074932383bb00d51b8ded8a0ee164b;p=firefly-linux-kernel-4.4.55.git

OMAP: serial: Remove incorrect disabling of IER interrupt

The recent patch to add RS485 contained a bug whereby the IER
interrupt was cleared down incorrectly.

This patch fixes the problem.

Signed-off-by: Mark Jackson <mpfj@newflow.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 2706c1187393..2fa7b5ce2e0c 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1327,9 +1327,6 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 	pm_runtime_get_sync(up->dev);
 	spin_lock_irqsave(&up->port.lock, flags);
 
-	up->ier &= ~(UART_IER_RLSI | UART_IER_RDI);
-	serial_out(up, UART_IER, up->ier);
-
 	/* Disable interrupts from this port */
 	mode = up->ier;
 	up->ier = 0;