linux-kernel - [PATCH: 1/2] gpio: tc35894: fix up tc35894 interrupt configuration

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Date:   Mon, 31 Aug 2020 15:14:32 +0800
From:   dillon.minfei@...il.com
To:     linus.walleij@...aro.org, lee.jones@...aro.org,
        bgolaszewski@...libre.com
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        dillon min <dillon.minfei@...il.com>
Subject: [PATCH: 1/2] gpio: tc35894: fix up tc35894 interrupt configuration

From: dillon min <dillon.minfei@...il.com>

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: c103de240439 ("gpio: reorganize drivers")
Signed-off-by: dillon min <dillon.minfei@...il.com>
---
 drivers/gpio/gpio-tc3589x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index 58b0da9eb76f..ea3f68a28fea 100644
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -212,7 +212,7 @@ 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);
 		}
 	}
 
-- 
2.7.4