Re: [PATCH 4.19 143/639] rtc: cmos: ignore bogus century byte

Hi!

From: Eric Wong e@80x24.org

[ Upstream commit 2a4daadd4d3e507138f8937926e6a4df49c6bfdc ]

Older versions of Libreboot and Coreboot had an invalid value (`3' in my case) in the century byte affecting the GM45 in the Thinkpad X200. Not everybody's updated their firmwares, and Linux <= 4.2 was able to read the RTC without problems, so workaround this by ignoring invalid values.

Should it print a warning so that wrong BIOSes are eventually fixed?

Best regards, Pavel