From: Joe Perches <joe@perches.com>
To: "Devendra.Naga" <devendra.aaru@gmail.com>
Cc: Larry.Finger@lwfinger.net, chaoming_li@realsil.com.cn,
linville@tuxdriver.com, paul.gortmaker@windriver.com,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] rtlwifi/rtl8192c: in _rtl92c_phy_calculate_bit_shift remove comparing bitmask against 1
Date: Mon, 30 Jan 2012 23:37:20 -0800 [thread overview]
Message-ID: <1327995440.1804.16.camel@joe2Laptop> (raw)
In-Reply-To: <1327993863-6810-1-git-send-email-devendra.aaru@gmail.com>
On Tue, 2012-01-31 at 02:11 -0500, Devendra.Naga wrote:
> From: "Devendra.Naga" <devendra.aaru@gmail.com>
[]
> diff --git a/drivers/net/wireless/rtlwifi/rtl8192c/phy_common.c b/drivers/net/wireless/rtlwifi/rtl8192c/phy_common.c
[]
> @@ -177,7 +177,7 @@ u32 _rtl92c_phy_calculate_bit_shift(u32 bitmask)
> u32 i;
>
> for (i = 0; i <= 31; i++) {
> - if (((bitmask >> i) & 0x1) == 1)
> + if ((bitmask >> i) & 0x1)
> break;
> }
> return i;
Perhaps this is simpler and faster:
{
u32 rtn = (u32)ffs((int)bitmask);
if (rtn)
return rtn - 1;
return 32;
}
next prev parent reply other threads:[~2012-01-31 7:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-31 7:11 [PATCH] rtlwifi/rtl8192c: in _rtl92c_phy_calculate_bit_shift remove comparing bitmask against 1 Devendra.Naga
2012-01-31 7:37 ` Joe Perches [this message]
2012-02-08 19:57 ` John W. Linville
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