gpio: Fix wrong rounding in gpio-menz127
diff mbox series

Message ID 20180604135814.101343-1-namit@vmware.com
State New, archived
Headers show
Series
  • gpio: Fix wrong rounding in gpio-menz127
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Commit Message

Nadav Amit June 4, 2018, 1:58 p.m. UTC
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(-)

Comments

Linus Walleij June 12, 2018, 8:40 a.m. UTC | #1
On Mon, Jun 4, 2018 at 3:58 PM, Nadav Amit <namit@vmware.com> wrote:

> 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>

Applied as a non-critical fix as I have not error reports.

Yours,
Linus Walleij

Patch
diff mbox series

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;