Re: [PATCH[ RTC: Add rtc_year_days() to calculate tm_yday

[Russell King]

On Wed, Jun 07, 2006 at 08:26:09PM +0200, Andrew Victor wrote:
> RTC: Add exported function rtc_year_days() to calculate the tm_yday
> value.

Is there a good reason for this?  I ask the question because the x86
/dev/rtc driver says:

         * Only the values that we read from the RTC are set. We leave
         * tm_wday, tm_yday and tm_isdst untouched. Note that while the
         * RTC has RTC_DAY_OF_WEEK, we should usually ignore it, as it is
         * only updated by the RTC when initially set to a non-zero value.

So it seems the established modus operandi for RTC interfaces is "don't
trust wday, yday and isdst".

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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