linux-kernel - [PATCH] powerpc: delete redundant conversion

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Message-Id: <1644395696-3545-1-git-send-email-wangqing@vivo.com>
Date:   Wed,  9 Feb 2022 00:34:55 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Anatolij Gustschin <agust@...x.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] powerpc: delete redundant conversion

From: Wang Qing <wangqing@...o.com>

do_div() does a 64-by-32 division
No need to transform gpt->ipb_freq to u64

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index f862b48..0cb2482
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -502,7 +502,7 @@ u64 mpc52xx_gpt_timer_period(struct mpc52xx_gpt_priv *gpt)
 	if (prescale == 0)
 		prescale = 0x10000;
 	period = period * prescale * 1000000000ULL;
-	do_div(period, (u64)gpt->ipb_freq);
+	do_div(period, gpt->ipb_freq);
 	return period;
 }
 EXPORT_SYMBOL(mpc52xx_gpt_timer_period);
-- 
2.7.4