--- /dev/null
+From 214b0e1ad01abf4c1f6d8d28fa096bf167e47cef Mon Sep 17 00:00:00 2001
+From: dillon min <dillon.minfei@gmail.com>
+Date: Thu, 3 Sep 2020 15:30:21 +0800
+Subject: gpio: tc35894: fix up tc35894 interrupt configuration
+
+From: dillon min <dillon.minfei@gmail.com>
+
+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>
+
+---
+ drivers/gpio/gpio-tc3589x.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpio/gpio-tc3589x.c
++++ b/drivers/gpio/gpio-tc3589x.c
+@@ -157,7 +157,7 @@ static void tc3589x_gpio_irq_sync_unlock
+ continue;
+
+ tc3589x_gpio->oldregs[i][j] = new;
+- tc3589x_reg_write(tc3589x, regmap[i] + j * 8, new);
++ tc3589x_reg_write(tc3589x, regmap[i] + j, new);
+ }
+ }
+