Re: [PATCH 1/2] mmc-utils: lsmmc.c: print_mmc_cid(): correct year/month parsing

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Shawn" == Shawn Lin <shawn.lin@rock-chips.com> writes:

Hi,

 > From the JESD84-B51, section 7.2.7,

 > For e•MMC 4.41 and later devices, indicated by a value larger than 4 in
 > EXT_CSD_REV [192], the 4-bit“y” field shall roll over after 2012, so
 > that y=0 shall be used for 2013. See Table 77 for a list of valid y
 > values for specific e•MMC versions.

 > So mdt_year + 1997 seems wrong, too.

That tweak is even not enough, E.G. I see the kernel does:

       if (card->ext_csd.rev >= 5) {
                /* Adjust production date as per JEDEC JESD84-B451 */
                if (card->cid.year < 2010)
                        card->cid.year += 16;

2009 + 16 = 2025, so what will happen in a few months?

-- 
Bye, Peter Korsgaard