powerpc: Avoid giving out RTC dates below EPOCH
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Sun, 1 Nov 2009 19:11:03 +0000 (19:11 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 5 Nov 2009 06:06:21 +0000 (17:06 +1100)
Doing so causes xtime to be negative which crashes the timekeeping
code in funny ways when doing suspend/resume

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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