On Tue, Apr 12 2011, Chris Ball wrote:
> There aren't many -EOPNOTSUPP returns in the stack.  I see:
> card/block.c: mmc_blk_issue_secdiscard_rq and mmc_blk_issue_discard_rq
> card/core.c: mmc_erase
> core/sd_ops.c: mmc_app_cmd
> Mind doing some instrumentation to figure out which it is?

Actually, this probably isn't necessary -- mmc_app_cmd() is the only call
involved in the setup path, via mmc_sd_init_card() -> mmc_app_send_scr().

So, a better question: was mmc_app_send_scr() succeeding on your previous
kernels?  There hasn't been much change in this area lately.


- Chris.
Chris Ball   <c...@laptop.org>   <http://printf.net/>
One Laptop Per Child

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