linux-kernel - [PATCH AUTOSEL for 4.9 074/190] gpio: gpio-wcove: fix irq pending status bit width

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Date:   Thu, 8 Mar 2018 04:59:24 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 074/190] gpio: gpio-wcove: fix irq pending
 status bit width

From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>

[ Upstream commit 7c2d176fe3f8dce632b948f79c7e89916ffe2c70 ]

Whiskey cove PMIC has three GPIO banks with total number of 13 GPIO
pins. But when checking for the pending status, for_each_set_bit() uses
bit width of 7 and hence it only checks the status for first 7 GPIO pins
missing to check/clear the status of rest of the GPIO pins. This patch
fixes this issue.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/gpio/gpio-wcove.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c
index d0ddba7a9d08..1012c86925ad 100644
--- a/drivers/gpio/gpio-wcove.c
+++ b/drivers/gpio/gpio-wcove.c
@@ -318,7 +318,7 @@ static irqreturn_t wcove_gpio_irq_handler(int irq, void *data)
 	while (pending) {
 		/* One iteration is for all pending bits */
 		for_each_set_bit(gpio, (const unsigned long *)&pending,
-						 GROUP0_NR_IRQS) {
+						 WCOVE_GPIO_NUM) {
 			offset = (gpio > GROUP0_NR_IRQS) ? 1 : 0;
 			mask = (offset == 1) ? BIT(gpio - GROUP0_NR_IRQS) :
 								BIT(gpio);
-- 
2.14.1