[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20150121130204.GC22024@x1>
Date: Wed, 21 Jan 2015 13:02:04 +0000
From: Lee Jones <lee.jones@...aro.org>
To: Brian Norris <computersforpeace@...il.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-mtd@...ts.infradead.org, kernel@...inux.com,
Angus Clark <angus.clark@...com>,
Carmelo Amoroso <carmelo.amoroso@...com>
Subject: Re: [PATCH v3 08/13] mtd: st_spi_fsm: Update the JEDEC probe to
handle extended READIDs
On Mon, 12 Jan 2015, Brian Norris wrote:
> On Mon, Dec 15, 2014 at 11:59:15AM +0000, Lee Jones wrote:
> > The previous code was based on 3-byte JEDEC IDs, with a possible 2-byte
> > extension. However, devices are now emerging that return 6 or more bytes of
> > READID data and the additional bytes are required to differentiate between
> > variants or generations of similar devices.
> >
> > This patch refactors the device table and JEDEC probe code to handle arbitrary
> > length READIDs, with the standard JEDEC definition now becoming a special case.
> > Functionally, there should be no change in behaviour. A subsequent patch will
> > update the table with extended READIDs where applicable.
>
> BTW, how's that promise going, where you work on adapting this driver to
> the spi-nor framework? We've already done some of this same work there.
I have pushed this point within ST and someone has agreed to do the
work. Last I heard it relied on these patches, but I'll ask again.
> > +#define RDID(...) __VA_ARGS__ /* Dummy macro to protect array argument. */
>
> What? What needs "protected"?
You're asking me questions I can't answer I'm afraid and Angus has now
left the building. I guess he thinks __VA_ARGS__ will prevent some
kind of overflow?
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists