From: dillon min <dillon.minfei@gmail.com>
Date: Thu, 3 Sep 2020 07:30:21 +0000 (+0800)
Subject: gpio: tc35894: fix up tc35894 interrupt configuration
X-Git-Tag: v4.9.239~51
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=eaff5190972173f9813f820d77419df9eeb6ead4;p=platform%2Fkernel%2Flinux-amlogic.git

gpio: tc35894: fix up tc35894 interrupt configuration

commit 214b0e1ad01abf4c1f6d8d28fa096bf167e47cef upstream.

The offset of regmap is incorrect, j * 8 is move to the
wrong register.

for example:

asume i = 0, j = 1. we want to set KPY5 as interrupt
falling edge mode, regmap[0][1] should be TC3589x_GPIOIBE1 0xcd
but, regmap[i] + j * 8 = TC3589x_GPIOIBE0 + 8 ,point to 0xd4,
this is TC3589x_GPIOIE2 not TC3589x_GPIOIBE1.

Fixes: d88b25be3584 ("gpio: Add TC35892 GPIO driver")
Cc: Cc: stable@vger.kernel.org
Signed-off-by: dillon min <dillon.minfei@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index d6e21f1a70a9..6cc7c5d59e46 100644
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -210,7 +210,7 @@ static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
 				continue;
 
 			tc3589x_gpio->oldregs[i][j] = new;
-			tc3589x_reg_write(tc3589x, regmap[i] + j * 8, new);
+			tc3589x_reg_write(tc3589x, regmap[i] + j, new);
 		}
 	}