linux-kernel - [PATCH] staging: rtl8723bs: use DIV_ROUND

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Date:   Sun, 13 Oct 2019 21:00:33 +0300
From:   Wambui Karuga <wambui.karugax@...il.com>
To:     outreachy-kernel@...glegroups.com
Cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rtl8723bs: use DIV_ROUND_UP helper macro

Use the DIV_ROUND_UP macro to replace open-coded divisor calculation
to improve readability.
Issue found using coccinelle:
@@
expression n,d;
@@
(
- ((n + d - 1) / d)
+ DIV_ROUND_UP(n,d)
|
- ((n + (d - 1)) / d)
+ DIV_ROUND_UP(n,d)
)

Signed-off-by: Wambui Karuga <wambui.karugax@...il.com>
---
 drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
index 87535a4c2e14..74312e8bb32e 100644
--- a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
+++ b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
@@ -4158,7 +4158,8 @@ void SetHwReg8723B(struct adapter *padapter, u8 variable, u8 *val)
 
 			/*  The value of ((usNavUpper + HAL_NAV_UPPER_UNIT_8723B - 1) / HAL_NAV_UPPER_UNIT_8723B) */
 			/*  is getting the upper integer. */
-			usNavUpper = (usNavUpper + HAL_NAV_UPPER_UNIT_8723B - 1) / HAL_NAV_UPPER_UNIT_8723B;
+			usNavUpper = DIV_ROUND_UP(usNavUpper,
+						  HAL_NAV_UPPER_UNIT_8723B);
 			rtw_write8(padapter, REG_NAV_UPPER, (u8)usNavUpper);
 		}
 		break;
-- 
2.23.0