Patch "serial: sprd: Use readable macros instead of magic number" has been added to the 4.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    serial: sprd: Use readable macros instead of magic number

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     serial-sprd-use-readable-macros-instead-of-magic-num.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit e16a9434dc4940d8ade1dbb42ac1c6b452308ed8
Author: Yonghan Ye <yonghan.ye@xxxxxxxxxx>
Date:   Wed Dec 4 20:00:07 2019 +0800

    serial: sprd: Use readable macros instead of magic number
    
    [ Upstream commit 2b5a997386b0594e671a32c7e429cf59ac8fc54c ]
    
    Define readable macros instead of magic number to make code more readable.
    
    Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
    Acked-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxxxxxx>
    Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index 82e00ac6f7e3..06980857d9e2 100644
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -302,6 +302,9 @@ static irqreturn_t sprd_handle_irq(int irq, void *dev_id)
 	if (ims & SPRD_IMSR_TIMEOUT)
 		serial_out(port, SPRD_ICLR, SPRD_ICLR_TIMEOUT);
 
+	if (ims & SPRD_IMSR_BREAK_DETECT)
+		serial_out(port, SPRD_ICLR, SPRD_IMSR_BREAK_DETECT);
+
 	if (ims & (SPRD_IMSR_RX_FIFO_FULL |
 		SPRD_IMSR_BREAK_DETECT | SPRD_IMSR_TIMEOUT))
 		sprd_rx(port);