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rtc: pcf8523: refuse to write dates later than 2099
authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Fri, 6 Nov 2015 16:37:56 +0000 (17:37 +0100)
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>
Mon, 11 Jan 2016 19:19:54 +0000 (20:19 +0100)
commitfbbf53f70225c82ba877de780486be5bc81b29e2
treedb1b469aefb12d9df8425d9b2450970becbcccb1tree | snapshot
parentc60faa3afad0e926e63a39894489b64e9a8165dfcommit | diff
rtc: pcf8523: refuse to write dates later than 2099

When the chip increments the YEAR register and it already holds
bin2bcd(99) it reads as 0 afterwards. With this behaviour the last valid
day (without trickery) that has a representation is 2099-12-31 23:59:59.
So refuse to write later dates.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
drivers/rtc/rtc-pcf8523.c diff | blob | blame | history
Linux kernel - Deliverables
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