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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Nadav Amit <namit@vmware.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 120/136] gpio: Fix wrong rounding in gpio-menz127
Thread-Topic: [PATCH AUTOSEL 4.18 120/136] gpio: Fix wrong rounding in
 gpio-menz127
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Date:   Mon, 17 Sep 2018 03:01:27 +0000
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From: Nadav Amit <namit@vmware.com>

[ Upstream commit 7279d9917560bbd0d82813d6bf00490a82c06783 ]

men_z127_debounce() tries to round up and down, but uses functions which
are only suitable when the divider is a power of two, which is not the
case. Use the appropriate ones.

Found by static check. Compile tested.

Fixes: f436bc2726c64 ("gpio: add driver for MEN 16Z127 GPIO controller")
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/gpio/gpio-menz127.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-menz127.c b/drivers/gpio/gpio-menz127.c
index e1037582e34d..b2635326546e 100644
--- a/drivers/gpio/gpio-menz127.c
+++ b/drivers/gpio/gpio-menz127.c
@@ -56,9 +56,9 @@ static int men_z127_debounce(struct gpio_chip *gc, unsign=
ed gpio,
 		rnd =3D fls(debounce) - 1;
=20
 		if (rnd && (debounce & BIT(rnd - 1)))
-			debounce =3D round_up(debounce, MEN_Z127_DB_MIN_US);
+			debounce =3D roundup(debounce, MEN_Z127_DB_MIN_US);
 		else
-			debounce =3D round_down(debounce, MEN_Z127_DB_MIN_US);
+			debounce =3D rounddown(debounce, MEN_Z127_DB_MIN_US);
=20
 		if (debounce > MEN_Z127_DB_MAX_US)
 			debounce =3D MEN_Z127_DB_MAX_US;
--=20
2.17.1