linux-kernel - Re: [PATCH] drivers: CCI: Correct use of ! and &

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Message-ID: <9hhvbqg1jra.fsf@arm.com>
Date:	Tue, 29 Jul 2014 12:34:17 +0100
From:	Punit Agrawal <punit.agrawal@....com>
To:	arm@...nel.org, arnd@...db.de
Cc:	Himangi Saraogi <himangi774@...il.com>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"julia.lawall\@lip6.fr" <julia.lawall@...6.fr>,
	"linux-arm-kernel\@lists.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH] drivers: CCI: Correct use of ! and &

Hi Arnd,

Will Deacon <will.deacon@....com> writes:

> On Wed, Jul 23, 2014 at 04:01:56PM +0100, Punit Agrawal wrote:
>> > diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
>> > index 5a86da9..7af78df 100644
>> > --- a/drivers/bus/arm-cci.c
>> > +++ b/drivers/bus/arm-cci.c
>> > @@ -397,7 +397,8 @@ static irqreturn_t pmu_handle_irq(int irq_num, void *dev)
>> >  		hw_counter = &event->hw;
>> >  
>> >  		/* Did this counter overflow? */
>> > -		if (!pmu_read_register(idx, CCI_PMU_OVRFLW) & CCI_PMU_OVRFLW_FLAG)
>> > +		if (!(pmu_read_register(idx, CCI_PMU_OVRFLW) &
>> > +		      CCI_PMU_OVRFLW_FLAG))
>> >  			continue;
>> 
>> 
>> Going back to the manual, this fix looks correct.
>> 
>> Acked-by: Punit Agrawal <punit.agrawal@....com>
>> 
>> Will, would this go via your tree?
>
> Given that you're happy with it, I don't mind which tree it goes in.
> Probably deserves a CC stable on it too.

The CCI PMU patches went via arm-soc. Are you happy to pick this fix with
the Ack and a Cc to stable.

Cheers,
Punit

>
> If you get stuck, put it in rmk's patch system.
>
> Will
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