netdev - Re: [PATCH net-next 2/9] be2net: replace (1 << x) with BIT(x)

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Date:	Mon, 16 Feb 2015 16:13:10 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Sathya Perla <Sathya.Perla@...lex.Com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 2/9] be2net: replace (1 << x) with BIT(x)

Hello.

On 2/16/2015 3:55 PM, Sathya Perla wrote:

>>> From: Vasundhara Volam <vasundhara.volam@...lex.com>

>>> BIT(x) is the preffered usage.

>>      Preferred.

> :-) As this is a harmless spelling mistake only in the changelog,
> I'll not bother sending a new patch for this!

    OK...

>> [...]

>>> diff --git a/drivers/net/ethernet/emulex/benet/be.h
>> b/drivers/net/ethernet/emulex/benet/be.h
>>> index 3b1d59d..9869556 100644
>>> --- a/drivers/net/ethernet/emulex/benet/be.h
>>> +++ b/drivers/net/ethernet/emulex/benet/be.h
>>> @@ -361,15 +361,15 @@ enum vf_state {
>>>    	ASSIGNED = 1
>>>    };
>>>
>>> -#define BE_FLAGS_LINK_STATUS_INIT		1
>>> -#define BE_FLAGS_SRIOV_ENABLED			(1 << 2)
>>> -#define BE_FLAGS_WORKER_SCHEDULED		(1 << 3)
>>> -#define BE_FLAGS_VLAN_PROMISC			(1 << 4)
>>> -#define BE_FLAGS_MCAST_PROMISC			(1 << 5)
>>> -#define BE_FLAGS_NAPI_ENABLED			(1 << 9)
>>> -#define BE_FLAGS_QNQ_ASYNC_EVT_RCVD		(1 << 11)
>>> -#define BE_FLAGS_VXLAN_OFFLOADS			(1 << 12)
>>> -#define BE_FLAGS_SETUP_DONE			(1 << 13)
>>> +#define BE_FLAGS_LINK_STATUS_INIT		BIT(1)

>>      Not BIT(0)?

> Huh, this was not intentional. I'll remember to use bit-0 the next time
> we introduce a new bit!

    Note that bit 0 was used for BE_FLAGS_LINK_STATUS_INIT before your patch.

[...]

WBR, Sergei

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