Re: (tiny) patch review: return if RTC diag fails

[Emile `iMil' Heitor <imil%home.imil.net@localhost>]

On Tue, 18 Feb 2025, Emile `iMil' Heitor wrote:

> if ((mc146818_read(NULL, MC_REGD) & MC_REGD_VRT) == 0)
> 	 return (-1);

My bad, this test assumes the chip is replying something valid, what
we want to test is that bits 0 to 6 are set to 0, so in startrtclock()
it would be:

/* RTC is present, bits 0 to 6 are 0 */
if ((mc146818_read(NULL, MC_REGD) & 0x7f) != 0)
	return;

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Emile `iMil' Heitor <imil@{home.imil.net,NetBSD.org}> | https://imil.net