linux-kernel - RE: [PATCHv2 1/2] clocksource: fix type confusion for clocksource_mmio_readX

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Message-ID: <2d73fa0de73443608ee272bc7685108d@BY2PR03MB505.namprd03.prod.outlook.com>
Date:	Mon, 19 May 2014 09:12:14 +0000
From:	"Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCHv2 1/2] clocksource: fix type confusion for
 clocksource_mmio_readX_Y

> Subject: Re: [PATCHv2 1/2] clocksource: fix type confusion for
> clocksource_mmio_readX_Y
> 
> On 05/19/2014 04:35 AM, Li.Xiubo@...escale.com wrote:
> > Hi,
> >
> > I'd like to know the status about this patch series...
> > :）
> 
> I think the patches are ok. I have them in my queue for 3.16.
> 

That's nice.

Thanks,

BRs
Xiubo

> >> -----Original Message-----
> >> From: Xiubo Li [mailto:Li.Xiubo@...escale.com]
> >> Sent: Wednesday, April 23, 2014 10:12 AM
> >> To: daniel.lezcano@...aro.org; tglx@...utronix.de; linux-
> >> kernel@...r.kernel.org
> >> Cc: Xiubo Li-B47053
> >> Subject: [PATCHv2 1/2] clocksource: fix type confusion for
> >> clocksource_mmio_readX_Y
> >>
> >> The types' definations are:
> >>     o  cycle_t       -> u64
> >>     o  readl_relaxed -> u32
> >>     o  readw_relaxed -> u16
> >>
> >> So let clocksource_mmio_readX_Ys return a cast to cycle_t, though
> >> this maybe look reduntant sometimes, it make sense and they will be
> >> more readable and less confusion...
> >>
> >> This patch clarifies the functions type and fix it.
> >>
> >> Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
> >> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> >> ---
> >>   drivers/clocksource/mmio.c | 8 ++++----
> >>   1 file changed, 4 insertions(+), 4 deletions(-)
> >>
> >> diff --git a/drivers/clocksource/mmio.c b/drivers/clocksource/mmio.c
> >> index c0e2512..19a6b3f 100644
> >> --- a/drivers/clocksource/mmio.c
> >> +++ b/drivers/clocksource/mmio.c
> >> @@ -22,22 +22,22 @@ static inline struct clocksource_mmio
> >> *to_mmio_clksrc(struct clocksource *c)
> >>
> >>   cycle_t clocksource_mmio_readl_up(struct clocksource *c)
> >>   {
> >> -	return readl_relaxed(to_mmio_clksrc(c)->reg);
> >> +	return (cycle_t)readl_relaxed(to_mmio_clksrc(c)->reg);
> >>   }
> >>
> >>   cycle_t clocksource_mmio_readl_down(struct clocksource *c)
> >>   {
> >> -	return ~readl_relaxed(to_mmio_clksrc(c)->reg);
> >> +	return ~(cycle_t)readl_relaxed(to_mmio_clksrc(c)->reg);
> >>   }
> >>
> >>   cycle_t clocksource_mmio_readw_up(struct clocksource *c)
> >>   {
> >> -	return readw_relaxed(to_mmio_clksrc(c)->reg);
> >> +	return (cycle_t)readw_relaxed(to_mmio_clksrc(c)->reg);
> >>   }
> >>
> >>   cycle_t clocksource_mmio_readw_down(struct clocksource *c)
> >>   {
> >> -	return ~(unsigned)readw_relaxed(to_mmio_clksrc(c)->reg);
> >> +	return ~(cycle_t)readw_relaxed(to_mmio_clksrc(c)->reg);
> >>   }
> >>
> >>   /**
> >> --
> >> 1.8.4
> >
> 
> 
> --
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