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Re: [PATCH 2/3] brcmfmac: dhd_sdio.c: use existing atomic_or primitive

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  Re: [PATCH 2/3] brcmfmac: dhd_sdio.c: use existing atomic_or primitive Kalle Valo <kvalo@codeaurora.org> - 2015-07-27 12:10 +0200
    Re: [PATCH 2/3] brcmfmac: dhd_sdio.c: use existing atomic_or  primitive Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-07-27 12:30 +0200

#1192921 — Re: [PATCH 2/3] brcmfmac: dhd_sdio.c: use existing atomic_or primitive

Arend van Spriel <arend@broadcom.com> writes:

> On 07/24/2015 07:22 PM, Vineet Gupta wrote:
>> On Friday 24 July 2015 08:02 PM, Kalle Valo wrote:
>>> Vineet Gupta <Vineet.Gupta1@synopsys.com> writes:
>>>
>>>>> There's already a generic implementation so use that instead.
>>>>> ---
>>>>> I'm not sure if the driver usage of atomic_or?() is correct in terms of
>>>>> storage size of @val for 64 bit arches.
>>>>>
>>>>> Assuming LP64 programming model for linux on say x86_64: atomic_or()
>>>>> callers in this driver use long (sana 64 bit) storage and pass it to
>>>>> atomic_orr/atomic_or which downcasts it to 32 bits. Is that OK ?
>>>>> ---
>>>>> Cc: Brett Rudley <brudley@broadcom.com>
>>>>> Cc: Arend van Spriel <arend@broadcom.com>
>>>>> Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com>
>>>>> Cc: Hante Meuleman <meuleman@broadcom.com>
>>>>> Cc: Kalle Valo <kvalo@codeaurora.org>
>>>>> Cc: Pieter-Paul Giesberts <pieterpg@broadcom.com>
>>>>> Cc: Daniel Kim <dekim@broadcom.com>
>>>>> Cc: linux-wireless@vger.kernel.org
>>>>> Cc: brcm80211-dev-list@broadcom.com
>>>>> Cc: Peter Zijlstra <peterz@infradead.org>
>>>>> Cc: Ingo Molnar <mingo@kernel.org>
>>>>> Cc: netdev@vger.kernel.org
>>>>> Cc: linux-arch@vger.kernel.org
>>>>> Cc: linux-kernel@vger.kernel.org
>>>>> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
>>>>>
>>>>> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
>>> What's the plan with this patch? Should I take it to my
>>> wireless-drivers-next tree or will someone else take it?
>>
>>
>> Per last discussion on this topic, Arend wanted to discuss abt this with Hante.
>> I'm not taking it anyways so feel free to pick it up if you want !
>
> Well, that was before your "timeline" clarification about the generic
> function. One what tree is this patch based?

Yeah, if this patch depends on another patch I need to know about it.
Otherwise I might break something when I apply this patch.

-- 
Kalle Valo
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#1192929 — Re: [PATCH 2/3] brcmfmac: dhd_sdio.c: use existing atomic_or primitive

On Monday 27 July 2015 01:08 PM, Kalle Valo wrote:
>>> >> Per last discussion on this topic, Arend wanted to discuss abt this with Hante.
>>> >> I'm not taking it anyways so feel free to pick it up if you want !
>> >
>> > Well, that was before your "timeline" clarification about the generic
>> > function. One what tree is this patch based?
> Yeah, if this patch depends on another patch I need to know about it.
> Otherwise I might break something when I apply this patch.

It was latest linux-next at the time, 4.1-rcx perhaps, don't remember exactly. But
it certainly doesn't depend on any new code  - the patch simply makes use of an
existing API vs. using a local hard coded version of same.

Give it a spin off your existing tree - shdn't be too difficult to test  I presume.

-Vineet
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