Patch "Input: tca8418_keypad - remove double read of key event register" has been added to the 4.4-stable tree

Patch "Input: tca8418_keypad - remove double read of key event register" has been added to the 4.4-stable tree

[gregkh]

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

    Input: tca8418_keypad - remove double read of key event register

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:
     input-tca8418_keypad-remove-double-read-of-key-event-register.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@vger.kernel.org> know about it.


>From 9dd46c02532a6bed6240101ecf4bbc407f8c6adf Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Mon, 13 Feb 2017 15:45:59 -0800
Subject: Input: tca8418_keypad - remove double read of key event register

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

commit 9dd46c02532a6bed6240101ecf4bbc407f8c6adf upstream.

There is no need to tread the same register twice in a row.

Fixes: ea4348c8462a ("Input: tca8418_keypad - hide gcc-4.9 -Wmaybe-un ...")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/input/keyboard/tca8418_keypad.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/input/keyboard/tca8418_keypad.c
+++ b/drivers/input/keyboard/tca8418_keypad.c
@@ -189,8 +189,6 @@ static void tca8418_read_keypad(struct t
 		input_event(input, EV_MSC, MSC_SCAN, code);
 		input_report_key(input, keymap[code], state);
 
-		/* Read for next loop */
-		error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);
 	} while (1);
 
 	input_sync(input);


Patches currently in stable-queue which might be from dmitry.torokhov@gmail.com are

queue-4.4/input-tca8418_keypad-remove-double-read-of-key-event-register.patch
queue-4.4/input-matrix_keypad-fix-race-when-disabling-interrupts.patch