Re: [GIT PULL] MMC updates

[Stefan Richter]

Pierre Ossman wrote:
> The host->removed member is only used for this simple test. It is set in
> mmc_host_remove() to indicate that the removal process has begun. At
> this point it is invalid to call mmc_detect_change() (the place this
> patch fixes). So the spinlocks are mostly there so that things are
> properly ordered when we go SMP. Some creative barriers would probably
> work as well, but I find spinlocks more "normal" and hence more readable.

Sounds to me like either struct xyz_host { atomic_t removed; } would do
the job, or that actually wider regions of mmc_host_remove() and
mmc_detect_change() need to be serialized.
-- 
Stefan Richter
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