[ECOS] CYG_ISR_CALL_DSR vs CYG_ISR_HANDLED

[osv <osv at javad dot com>]

Hello,

In the eCos reference manual one can read:

  The return value of an ISR is normally one of CYG_ISR_CALL_DSR or
  CYG_ISR_HANDLED. The former indicates that further processing is
  required at DSR level, and the interrupt handlerâs DSR will be run as
  soon as possible. The latter indicates that the interrupt has been
  fully handled and no further effort is required.

However, the eCos internal clock isr (Cyg_RealTimeClock::isr()) returns
as follows:

    return Cyg_Interrupt::CALL_DSR|Cyg_Interrupt::HANDLED;

that seems to contradict with the description above. What is the truth
about isr handler return codes?

-- 
Sergei.

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