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Guillaume LECERF 564b84978d mtd: cfi_cmdset_0002: do not fail on no extended query table as they are both optional 
After looking at AMD's CFI specification [1], both of the extended query
tables are optional. Thus, it looks like relying that at least one of
those tables exist is a bug in cfi_cmdset_0002.

This patch inverts the logic and checks for unlock function pointers before
exiting on error. This approach leaves place to add a call to a fixup
function to try to handle chips compatible with the early AMD specification
from 1995 [2].

[1] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_r20.pdf
[2] http://noel.feld.cvut.cz/hw/amd/20158a.pdf

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14 01:33:27 +01:00
..
chips mtd: cfi_cmdset_0002: do not fail on no extended query table as they are both optional 2010-05-14 01:33:27 +01:00
devices Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
lpddr drivers/mtd: Use kzalloc 2010-05-13 21:23:06 +01:00
maps mtd: extend physmap_of to let the device tree specify the parition probe 2010-05-14 00:32:30 +01:00
nand mtd: orion/kirkwood: add RnB line support to orion mtd driver 2010-05-14 01:04:19 +01:00
onenand Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
tests drivers/mtd: Use kzalloc 2010-05-13 21:23:06 +01:00
ubi include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
afs.c mtd: afs: fix build warning 2009-09-04 09:38:14 +01:00
ar7part.c [MTD] mtdpart: Make all partition parsers return allocated array 2009-03-20 18:55:17 +00:00
cmdlinepart.c mtd: cmdlineparts: Use 64-bit format when printing a debug message. 2009-06-25 08:18:12 +01:00
ftl.c mtd: blktrans: Hotplug fixes 2010-02-26 17:05:26 +00:00
inftlcore.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-03-26 14:55:59 +00:00
inftlmount.c mtd: inftl: misplaced parenthesis in find_boot_record 2010-02-26 13:22:07 +00:00
Kconfig mtd: sm_ftl: remove CONFIG_SM_FTL_MUSEUM and make it always on 2010-03-26 15:28:59 +00:00
Makefile Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
mtd_blkdevs.c mtd: blktrans: do blk_cleanup_queue when it is really safe to do so 2010-03-08 18:57:42 -08:00
mtdblock_ro.c mtd: mtdblock: test return value of add_mtd_blktrans_dev, because if can fail 2010-02-26 17:05:46 +00:00
mtdblock.c mtd: Few follow up cleanups for Smartmedia/xD support 2010-02-26 20:13:49 +00:00
mtdchar.c mtdchar: Register the full range of minor numbers 2010-02-25 12:46:04 +00:00
mtdconcat.c mtd: mtdconcat: prevent a read from eraseregions[-1] 2009-09-19 11:18:46 -07:00
mtdcore.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
mtdcore.h mtd: Replace static array of devices with an idr structure 2010-02-25 11:55:14 +00:00
mtdoops.c mtd: Remove unnecessary comparisons with MAX_MTD_DEVICES 2010-02-25 11:39:09 +00:00
mtdpart.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-09-20 05:55:36 -07:00
mtdsuper.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
nftlcore.c mtd: blktrans: Hotplug fixes 2010-02-26 17:05:26 +00:00
nftlmount.c [MTD] update internal API to support 64-bit device size 2008-12-10 13:37:21 +00:00
ofpart.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
redboot.c
rfd_ftl.c mtd: blktrans: Hotplug fixes 2010-02-26 17:05:26 +00:00
sm_ftl.c bitops: rename for_each_bit() to for_each_set_bit(): mtd 2010-04-08 09:42:41 +01:00
sm_ftl.h mtd: Add new SmartMedia/xD FTL 2010-02-26 19:06:50 +00:00
ssfdc.c mtd: blktrans: Hotplug fixes 2010-02-26 17:05:26 +00:00