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Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual Timer

Started byDaniel Lezcano <daniel.lezcano@linaro.org>
First post2016-06-16 15:40 +0200
Last post2016-06-16 16:20 +0200
Articles 4 — 2 participants

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  Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual  Timer Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-06-16 15:40 +0200
    Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual  Timer Neil Armstrong <narmstrong@baylibre.com> - 2016-06-16 15:50 +0200
      Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual  Timer Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-06-16 16:20 +0200
      Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual  Timer Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-06-16 16:20 +0200

#1424054 — Re: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual Timer

FromDaniel Lezcano <daniel.lezcano@linaro.org>
Date2016-06-16 15:40 +0200
SubjectRe: [PATCH v3 1/2] clocksource: Add Oxford Semiconductor RPS Dual Timer
Message-ID<rKFGx-vH-1@gated-at.bofh.it>
On 06/15/2016 05:35 PM, kbuild test robot wrote:
> Hi,
>
> [auto build test WARNING on tip/timers/core]
> [also build test WARNING on v4.7-rc3 next-20160615]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Neil-Armstrong/clocksource-Add-support-for-Oxford-Semiconductor-RPS-Dual-Timer/20160615-181650
> config: blackfin-allmodconfig (attached as .config)
> compiler: bfin-uclinux-gcc (GCC) 4.6.3
> reproduce:
>          wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # save the attached .config to linux build tree
>          make.cross ARCH=blackfin
>
> All warnings (new ones prefixed by >>):
>
>>> drivers/clocksource/timer-oxnas-rps.c:50:0: warning: "TIMER_ENABLE" redefined [enabled by default]
>     arch/blackfin/mach-bf533/include/mach/defBF532.h:97:0: note: this is the location of the previous definition
>
> vim +/TIMER_ENABLE +50 drivers/clocksource/timer-oxnas-rps.c
>
>      34	/* TIMER1 used as tick
>      35	 * TIMER2 used as clocksource
>      36	 */
>      37	
>      38	/* Registers definitions */
>      39	
>      40	#define TIMER_LOAD_REG		0x0
>      41	#define TIMER_CURR_REG		0x4
>      42	#define TIMER_CTRL_REG		0x8
>      43	#define TIMER_CLRINT_REG	0xC
>      44	
>      45	#define TIMER_BITS		24
>      46	
>      47	#define TIMER_MAX_VAL		(BIT(TIMER_BITS) - 1)
>      48	
>      49	#define TIMER_PERIODIC		BIT(6)
>    > 50	#define TIMER_ENABLE		BIT(7)

It is already defined in the arch/blackfin/include dir.





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#1424067

FromNeil Armstrong <narmstrong@baylibre.com>
Date2016-06-16 15:50 +0200
Message-ID<rKFQd-za-1@gated-at.bofh.it>
In reply to#1424054
On 06/16/2016 03:33 PM, Daniel Lezcano wrote:
> On 06/15/2016 05:35 PM, kbuild test robot wrote:
>> Hi,
>>
>> [auto build test WARNING on tip/timers/core]
>> [also build test WARNING on v4.7-rc3 next-20160615]
>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>
>> url:    https://github.com/0day-ci/linux/commits/Neil-Armstrong/clocksource-Add-support-for-Oxford-Semiconductor-RPS-Dual-Timer/20160615-181650
>> config: blackfin-allmodconfig (attached as .config)
>> compiler: bfin-uclinux-gcc (GCC) 4.6.3
>> reproduce:
>>          wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>>          chmod +x ~/bin/make.cross
>>          # save the attached .config to linux build tree
>>          make.cross ARCH=blackfin
>>
>> All warnings (new ones prefixed by >>):
>>
>>>> drivers/clocksource/timer-oxnas-rps.c:50:0: warning: "TIMER_ENABLE" redefined [enabled by default]
>>     arch/blackfin/mach-bf533/include/mach/defBF532.h:97:0: note: this is the location of the previous definition
>>
>> vim +/TIMER_ENABLE +50 drivers/clocksource/timer-oxnas-rps.c
>>
>>      34    /* TIMER1 used as tick
>>      35     * TIMER2 used as clocksource
>>      36     */
>>      37   
>>      38    /* Registers definitions */
>>      39   
>>      40    #define TIMER_LOAD_REG        0x0
>>      41    #define TIMER_CURR_REG        0x4
>>      42    #define TIMER_CTRL_REG        0x8
>>      43    #define TIMER_CLRINT_REG    0xC
>>      44   
>>      45    #define TIMER_BITS        24
>>      46   
>>      47    #define TIMER_MAX_VAL        (BIT(TIMER_BITS) - 1)
>>      48   
>>      49    #define TIMER_PERIODIC        BIT(6)
>>    > 50    #define TIMER_ENABLE        BIT(7)
> 
> It is already defined in the arch/blackfin/include dir.
> 

Hi Daniel,

This should never happen due to the blackfin headers.
Actually the COMPILE_TEST option made these two happen.

Should I push a v4 to keep COMPILE_TEST ?

Neil

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#1424101

FromDaniel Lezcano <daniel.lezcano@linaro.org>
Date2016-06-16 16:20 +0200
Message-ID<rKGjf-XU-1@gated-at.bofh.it>
In reply to#1424067
On 06/16/2016 03:47 PM, Neil Armstrong wrote:
> On 06/16/2016 03:33 PM, Daniel Lezcano wrote:
>> On 06/15/2016 05:35 PM, kbuild test robot wrote:
>>> Hi,
>>>
>>> [auto build test WARNING on tip/timers/core]
>>> [also build test WARNING on v4.7-rc3 next-20160615]
>>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>>
>>> url:    https://github.com/0day-ci/linux/commits/Neil-Armstrong/clocksource-Add-support-for-Oxford-Semiconductor-RPS-Dual-Timer/20160615-181650
>>> config: blackfin-allmodconfig (attached as .config)
>>> compiler: bfin-uclinux-gcc (GCC) 4.6.3
>>> reproduce:
>>>           wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>>>           chmod +x ~/bin/make.cross
>>>           # save the attached .config to linux build tree
>>>           make.cross ARCH=blackfin
>>>
>>> All warnings (new ones prefixed by >>):
>>>
>>>>> drivers/clocksource/timer-oxnas-rps.c:50:0: warning: "TIMER_ENABLE" redefined [enabled by default]
>>>      arch/blackfin/mach-bf533/include/mach/defBF532.h:97:0: note: this is the location of the previous definition
>>>
>>> vim +/TIMER_ENABLE +50 drivers/clocksource/timer-oxnas-rps.c
>>>
>>>       34    /* TIMER1 used as tick
>>>       35     * TIMER2 used as clocksource
>>>       36     */
>>>       37
>>>       38    /* Registers definitions */
>>>       39
>>>       40    #define TIMER_LOAD_REG        0x0
>>>       41    #define TIMER_CURR_REG        0x4
>>>       42    #define TIMER_CTRL_REG        0x8
>>>       43    #define TIMER_CLRINT_REG    0xC
>>>       44
>>>       45    #define TIMER_BITS        24
>>>       46
>>>       47    #define TIMER_MAX_VAL        (BIT(TIMER_BITS) - 1)
>>>       48
>>>       49    #define TIMER_PERIODIC        BIT(6)
>>>     > 50    #define TIMER_ENABLE        BIT(7)
>>
>> It is already defined in the arch/blackfin/include dir.
>>
>
> Hi Daniel,
>
> This should never happen due to the blackfin headers.
> Actually the COMPILE_TEST option made these two happen.
>
> Should I push a v4 to keep COMPILE_TEST ?

Oh, actually with 'depends on GENERIC_CLOCKSOURCE', that should solve 
both errors.


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Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
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#1424102

FromDaniel Lezcano <daniel.lezcano@linaro.org>
Date2016-06-16 16:20 +0200
Message-ID<rKGjf-XU-3@gated-at.bofh.it>
In reply to#1424067
On 06/16/2016 03:47 PM, Neil Armstrong wrote:
> On 06/16/2016 03:33 PM, Daniel Lezcano wrote:
>> On 06/15/2016 05:35 PM, kbuild test robot wrote:
>>> Hi,
>>>
>>> [auto build test WARNING on tip/timers/core]
>>> [also build test WARNING on v4.7-rc3 next-20160615]
>>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>>
>>> url:    https://github.com/0day-ci/linux/commits/Neil-Armstrong/clocksource-Add-support-for-Oxford-Semiconductor-RPS-Dual-Timer/20160615-181650
>>> config: blackfin-allmodconfig (attached as .config)
>>> compiler: bfin-uclinux-gcc (GCC) 4.6.3
>>> reproduce:
>>>           wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>>>           chmod +x ~/bin/make.cross
>>>           # save the attached .config to linux build tree
>>>           make.cross ARCH=blackfin
>>>
>>> All warnings (new ones prefixed by >>):
>>>
>>>>> drivers/clocksource/timer-oxnas-rps.c:50:0: warning: "TIMER_ENABLE" redefined [enabled by default]
>>>      arch/blackfin/mach-bf533/include/mach/defBF532.h:97:0: note: this is the location of the previous definition
>>>
>>> vim +/TIMER_ENABLE +50 drivers/clocksource/timer-oxnas-rps.c
>>>
>>>       34    /* TIMER1 used as tick
>>>       35     * TIMER2 used as clocksource
>>>       36     */
>>>       37
>>>       38    /* Registers definitions */
>>>       39
>>>       40    #define TIMER_LOAD_REG        0x0
>>>       41    #define TIMER_CURR_REG        0x4
>>>       42    #define TIMER_CTRL_REG        0x8
>>>       43    #define TIMER_CLRINT_REG    0xC
>>>       44
>>>       45    #define TIMER_BITS        24
>>>       46
>>>       47    #define TIMER_MAX_VAL        (BIT(TIMER_BITS) - 1)
>>>       48
>>>       49    #define TIMER_PERIODIC        BIT(6)
>>>     > 50    #define TIMER_ENABLE        BIT(7)
>>
>> It is already defined in the arch/blackfin/include dir.
>>
>
> Hi Daniel,
>
> This should never happen due to the blackfin headers.
> Actually the COMPILE_TEST option made these two happen.
>
> Should I push a v4 to keep COMPILE_TEST ?

The easier way would be:
	depends on !BLACKFIN

I will take care of cleaning up this macro name collision when moving 
the timer driver in drivers/clocksource (that's really in the future ...).

The idea is to have all the drivers with the COMPILE_TEST option set, so 
we can spot more issues at compile time earlier. This change reveals, of 
course, some errors we were not facing before and at least it has the 
benefit to enlighten some arch-shadowed drivers.

   -- Daniel

-- 
  <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
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