From: Nadav Amit <namit@vmware.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: <linux-gpio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Nadav Amit <namit@vmware.com>
Subject: [PATCH] gpio: Fix wrong rounding in gpio-menz127
Date: Mon, 4 Jun 2018 06:58:14 -0700 [thread overview]
Message-ID: <20180604135814.101343-1-namit@vmware.com> (raw)
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>
---
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, unsigned gpio,
rnd = fls(debounce) - 1;
if (rnd && (debounce & BIT(rnd - 1)))
- debounce = round_up(debounce, MEN_Z127_DB_MIN_US);
+ debounce = roundup(debounce, MEN_Z127_DB_MIN_US);
else
- debounce = round_down(debounce, MEN_Z127_DB_MIN_US);
+ debounce = rounddown(debounce, MEN_Z127_DB_MIN_US);
if (debounce > MEN_Z127_DB_MAX_US)
debounce = MEN_Z127_DB_MAX_US;
--
2.17.0
next reply other threads:[~2018-06-04 21:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-04 13:58 Nadav Amit [this message]
2018-06-12 8:40 ` [PATCH] gpio: Fix wrong rounding in gpio-menz127 Linus Walleij
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