linux-kernel - Re: [PATCH 2/2] MEMSTICK: Add driver for Ricoh R5C592 Card reader.

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Message-ID: <840953.65325.qm@web37607.mail.mud.yahoo.com>
Date:	Fri, 6 Aug 2010 00:43:52 -0700 (PDT)
From:	Alex Dubov <oakad@...oo.com>
To:	Maxim Levitsky <maximlevitsky@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] MEMSTICK: Add driver for Ricoh R5C592 Card reader.

> > > > > 
> > > > > That's how its called in the spec.
> > > > > Sectors can be larger than 512b on
> Pro-HG sticks, and
> > > > there's additional
> > > > > TPC_READ/WRITE_QUAD_DATA which operates
> on larger
> > > > quantities.
> > > > But not on ordinary PRO, right?
> > > 
> > > Pro sectors are normally 512 bytes.
> > > 
> > > > 
> > > > Small question, can I use Pro-HG stick in my
> reader that is
> > > > designed for
> > > > Standard/PRO only? Does your subsystem
> support it?
> > > 
> > > It should work. It works for me on TI, which has
> no 8b mode either.
> > In that case, is there an upper limit on sector size?
> Also, you don't use the MS_TPC_READ_QUAD_DATA at all.
> So mspro_blk.c won't work with >512 bytes/sector disk?
> Or there is some compatibility?
> 

The code can work with arbitrarily sized pages, 512b
value is not hard coded. All that is needed is to slightly alter 
h_mspro_block_transfer_data function, given, of course, that adapters
support longer transfer sizes.

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