linux-kernel - Re: [PATCH v6 0/3] mtd: nand: gpmi: add proper raw access support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 1 Dec 2014 00:47:09 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org, Huang Shijie <shijie8@...il.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Mike Voytovich <mvoytovich@...pal.com>,
	Roy Lee <roylee@...pal.com>
Subject: Re: [PATCH v6 0/3] mtd: nand: gpmi: add proper raw access support

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?

Also, is it time to yank / fixup some of these comments from
gpmi-nand.c?

 ...
 * 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.
 */

Brian
--
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/