* Ivan Djelic <ivan.djelic@xxxxxxxxxx> [121010 09:40]: > > I ran several mtd regression tests on a Beagle Board on your gpmc-czimage-v2 tag. > All BCH error correcting tests passed successfully. > > I occasionally had weird read errors though, especially when reading blank pages: > the omap driver returned 512-byte sectors containing something like: > > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff > 30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ff30ffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > > instead of: > > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > > I was able to reproduce the problem also on l2-mtd tip, albeit less often. > The problem seems to occur quite randomly, it may be a hardware issue on > my board... Things like this typically happen in the GPMC timings are not correct. Maybe add #define DEBUG to top of gpmc.c and compare the timings before and after Afzal's patches? > Anyway, the ECC handling part looks OK to me. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
