Re: [PATCH] mmc: align data size for host which only supportspower-of-2 block

[Pierre Ossman]

On Thu, 26 Mar 2009 10:22:54 +0800
"Cai, Cliff" <Cliff.Cai@xxxxxxxxxx> wrote:

> >
> >mmc_align_data_size() shouldn't be adjusting the size to something it
> >can easily determine that it's invalid.
> 
> Should I create a new function to do the power-of-2 adjustment?
> Or any ideal way to do it?

That function is the correct place. My point was that we need to check
after the adjustment that we didn't violate any of the other
restrictions the driver has set. If we do, we should just return the
original value.

> Otherwise,the SDH almost can't be used as sdio host.

Unfortunately I think this controller will be very unsuitable as an
SDIO controller anyway with that restriction.

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

  WARNING: This correspondence is being monitored by the
  Swedish government. Make sure your server uses encryption
  for SMTP traffic and consider using PGP for end-to-end
  encryption.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/