Re: [PATCH] EmbeddedPkg/TimeBaseLib: remove the SEC_PER_MONTH, SEC_PER_YEAR macros

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 9/4/20 6:42 PM, Leif Lindholm wrote:
> Ming bounced, adding xiewenyi2.
> 
> On Fri, Sep 04, 2020 at 17:16:44 +0100, Leif Lindholm wrote:
>> +Ming
>>
>> On Fri, Sep 04, 2020 at 17:45:41 +0200, Laszlo Ersek wrote:
>>> The SEC_PER_MONTH and SEC_PER_YEAR macros are wrong: they both evaluate to
>>> 0 (of type "int"). They are also unused (they could never be used for
>>> division, for example); so remove them. The macros were originally
>>> introduced in commit 0f4386e775c7 ("ArmPlatformPkg/PL031RealTimeClockLib:
>>> Implement PL031 RTC drive", 2011-06-11).
>>>
>>> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
>>> Cc: Leif Lindholm <leif@nuviainc.com>
>>> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
>>> Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
>>> Reported-by: Maciej Rabeda <maciej.rabeda@linux.intel.com>
>>> Signed-off-by: Laszlo Ersek <lersek@redhat.com>
>>
>> Hmm, these are used in a couple of Hisilicon libraries in
>> edk2-platforms. Cleary, they are not now functioning as expected (but
>> they never invoke these macros for division).
>>
>> We should fix this, but possibly by correcting the macros instead of
>> deleting them?

I'm not sure how to fix, not all months have 30 days...

Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>

>>
>> /
>>     Leif (goes back to now hopefuly lit barbecue)
>>
>>> ---
>>>  EmbeddedPkg/Include/Library/TimeBaseLib.h | 2 --
>>>  1 file changed, 2 deletions(-)
>>>
>>> diff --git a/EmbeddedPkg/Include/Library/TimeBaseLib.h b/EmbeddedPkg/Include/Library/TimeBaseLib.h
>>> index ee2f191d985b..3c2d3660c66c 100644
>>> --- a/EmbeddedPkg/Include/Library/TimeBaseLib.h
>>> +++ b/EmbeddedPkg/Include/Library/TimeBaseLib.h
>>> @@ -51,8 +51,6 @@
>>>  #define SEC_PER_MIN                                     ((UINTN)    60)
>>>  #define SEC_PER_HOUR                                    ((UINTN)  3600)
>>>  #define SEC_PER_DAY                                     ((UINTN) 86400)
>>> -#define SEC_PER_MONTH                                   ((UINTN)  2,592,000)
>>> -#define SEC_PER_YEAR                                    ((UINTN) 31,536,000)
>>>  
>>>  BOOLEAN
>>>  EFIAPI
>>> -- 
>>> 2.19.1.3.g30247aa5d201
>>>
>