linux-kernel - [PATCH 1/2] input: keyboard: imx: no need to control interrupt status in event check

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Message-ID: <1553842562-8481-1-git-send-email-Anson.Huang@nxp.com>
Date:   Fri, 29 Mar 2019 07:00:43 +0000
From:   Anson Huang <anson.huang@....com>
To:     "dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH 1/2] input: keyboard: imx: no need to control interrupt status
 in event check

There is no need to enable release interrupt and disable depress
interrupt in event check, as a timer is setup for checking these
events rather than interrupts.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/input/keyboard/imx_keypad.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/input/keyboard/imx_keypad.c b/drivers/input/keyboard/imx_keypad.c
index 539cb67..7e32c36 100644
--- a/drivers/input/keyboard/imx_keypad.c
+++ b/drivers/input/keyboard/imx_keypad.c
@@ -276,11 +276,6 @@ static void imx_keypad_check_for_events(struct timer_list *t)
 		reg_val = readw(keypad->mmio_base + KPSR);
 		reg_val |= KBD_STAT_KPKR | KBD_STAT_KRSS;
 		writew(reg_val, keypad->mmio_base + KPSR);
-
-		reg_val = readw(keypad->mmio_base + KPSR);
-		reg_val |= KBD_STAT_KRIE;
-		reg_val &= ~KBD_STAT_KDIE;
-		writew(reg_val, keypad->mmio_base + KPSR);
 	}
 }
 
-- 
2.7.4