Re: [PATCHv2 1/2] clocksource: fix type confusion for clocksource_mmio_readX_Y
From: Daniel Lezcano
Date: Mon May 19 2014 - 05:09:31 EST
On 05/19/2014 04:35 AM, Li.Xiubo@xxxxxxxxxxxxx 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.
>> -----Original Message-----
>> From: Xiubo Li [mailto:Li.Xiubo@xxxxxxxxxxxxx]
>> Sent: Wednesday, April 23, 2014 10:12 AM
>> To: daniel.lezcano@xxxxxxxxxx; tglx@xxxxxxxxxxxxx; linux-
>> kernel@xxxxxxxxxxxxxxx
>> 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@xxxxxxxxxxxxx>
>> Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
>> ---
>> 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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