[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20141202004743.GB11370@shldeISGChi005.sh.intel.com>
Date: Tue, 2 Dec 2014 08:47:43 +0800
From: Huang Shijie <shijie.huang@...el.com>
To: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: Brian Norris <computersforpeace@...il.com>,
Huang Shijie <shijie8@...il.com>, linux-kernel@...r.kernel.org,
linux-mtd@...ts.infradead.org, Roy Lee <roylee@...pal.com>,
Mike Voytovich <mvoytovich@...pal.com>,
David Woodhouse <dwmw2@...radead.org>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 0/3] mtd: nand: gpmi: add proper raw access support
On Mon, Dec 01, 2014 at 09:58:58AM +0100, Boris Brezillon wrote:
> Hi Brian,
>
> On Mon, 1 Dec 2014 00:47:09 -0800
> Brian Norris <computersforpeace@...il.com> wrote:
>
> > On Sun, Nov 30, 2014 at 07:10:27PM +0100, Boris Brezillon wrote:
> > > Hello,
> > >
> > > This series provides an implementation for raw accesses taking care of
> > > hidding the specific layout used by the GPMI controller.
> > >
> > > Best Regards,
> > >
> > > Boris
> > >
> > > Changes since v5:
> > > - rename gpmi_move_bits into gpmi_copy_bits
> > >
> > > Changes since v4:
> > > - fixed a few corner cases in gpmi_move_bits (tested it with:
> > > https://github.com/bbrezillon/gpmi-move-bits-test/blob/master/gpmi-move-bits-test.c)
> > > - add documentation and comments for the new gpmi functions
> > >
> > > Changes since v3:
> > > - add comments to the gpmi_move_bits function
> > > - extend raw read/write documentation
> > > - move last part of the raw_page_read function into a conditional block
> > >
> > > Changes since v2:
> > > - fixed a bug in gpmi_move_bits
> > > - add a raw_buffer field to be used when using raw access methods
> > > (experienced memory corruptions when directly using page_buffer_virt
> > > buffer)
> > > - add raw OOB access functions
> >
> > Applied the series. Thanks!
> >
> > Out of curiosity, what tests does gpmi-nand.c now pass/fail?
>
> The oobtest is still failing. I started to debug it, but didn't have
> enough time to make it work.
>
> The nandbiterrs test is working, though I didn't manage to make the
> incremental test fail (writing the same pattern 10000 times without
> erasing the block between each write does not generate any bit flips) on
> my SLC NAND: MT29F2G08ABAEAH4.
> Can someone with another SLC NAND chip try it ?
>
> >
> > Also, is it time to yank / fixup some of these comments from
> > gpmi-nand.c?
>
> I was asking myself the same question...
>
> >
> > ...
> > * FIXME: The following paragraph is incorrect, now that there exist
> > * ecc.read_oob_raw and ecc.write_oob_raw functions.
> > *
> > * Since MTD assumes the OOB is not covered by ECC, there is no pair of
> > * ECC-based/raw functions for reading or or writing the OOB. The fact that the
> > * caller wants an ECC-based or raw view of the page is not propagated down to
> > * this driver.
> > */
>
> I guess we can remove them.
> Huang can you confirm that the raw access functions introduced in this
> series are covering what's described here ?
I think we can remove these comments now.
thanks
Huang Shijie
--
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