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path: root/drivers/mtd/devices
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2011-06-16Change Ryan Mallon's email address across the kernelRyan Mallon
I no longer work at Bluewater Systems. Update my email address accordingly. I have deleted my email address from C files rather than change it. This was suggested by several people, since the commit from my new email address will cause scripts/get_maintainer.pl to function properly. I have not added the .mailmap entry as suggested by Joe because I think it is no longer necessary if I touch all the files which had my name in them. Signed-off-by: Ryan Mallon <rmallon@gmail.com> Cc: Andre Renaud <andre@bluewatersys.com> Cc: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Andrew Victor <avictor.za@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Anton Vorontsov <cbou@mail.ru> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Liam Girdwood <lrg@ti.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Joe Perches <joe@perches.com> Cc: Jesper Juhl <jj@chaosbits.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: trivial@kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-25mtd: convert remaining users to mtd_device_register()Jamie Iles
The older add_mtd_device()/add_mtd_partitions() and their removal counterparts will soon be gone. Replace uses with mtd_device_register() and mtd_device_unregister(). Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: sst25l: convert to mtd_device_register()Jamie Iles
Convert to mtd_device_register() and remove the check for mtd_has_partitions() as we always have partitioning enabled now. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: dataflash: convert to mtd_device_register()Jamie Iles
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: convert to mtd_device_register()Jamie Iles
Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: sst25l: fix section markingsMike Frysinger
The previous section mismatch fix for this driver wasn't entirely correct. The sst25l_flash_info array is now used in the devinit probe func, but is marked as initdata, so building results in the warning: WARNING: drivers/mtd/devices/sst25l.o(.devinit.text): Section mismatch in reference from the function sst25l_probe() to the variable .init.data:sst25l_flash_info Further, the remove func should be devexit rather than exit to match the probe func. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: Add Spansion S25FL512S, S70FL01GSKevin Cernekee
S25FL512S = 64MiB single die, same family as S25FL256S S70FL01GS = 2x S25FL512S dies in one package (separate chip selects) These devices are not sampling yet, but they are expected to be very similar to S25FL256S, which has been tested. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: Add Spansion S25FL256SKevin Cernekee
These are 32MiB parts which use a slightly different 4-byte enable sequence from Macronix. Default to the Spansion 4-byte scheme in set_4byte(), as it is more likely to be copied by other vendors. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: Clean up JEDEC manufacturer checksKevin Cernekee
Use the manufacturer ID names from cfi.h instead of hard-coding hex constants. Introduce a JEDEC_MFR macro for clarity. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: Add Numonyx m25px32 familyKevin Cernekee
Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: m25p80: add support for the MX25L1606E chipGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-11mtd: m25p80: add support for M25PX64Yoshihiro Shimoda
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: phram: fix memory leakMathias Krause
Commit 4f678a58 (mtd: fix memory leaks in phram_setup) missed two cases where the memory allocated for name would be leaked. This commit frees the memory when register_device() fails and on unregister_devices(). Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: mtdram: initialize writebufsize fieldArtem Bityutskiy
Set the 'mtd->writebufsize' field to 64 to mimic modern CFI flashes. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: m25p80: add support for the EON EN25F32 chipGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-01-17Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (59 commits) mtd: mtdpart: disallow reading OOB past the end of the partition mtd: pxa3xx_nand: NULL dereference in pxa3xx_nand_probe UBI: use mtd->writebufsize to set minimal I/O unit size mtd: initialize writebufsize in the MTD object of a partition mtd: onenand: add mtd->writebufsize initialization mtd: nand: add mtd->writebufsize initialization mtd: cfi: add writebufsize initialization mtd: add writebufsize field to mtd_info struct mtd: OneNAND: OMAP2/3: prevent regulator sleeping while OneNAND is in use mtd: OneNAND: add enable / disable methods to onenand_chip mtd: m25p80: Fix JEDEC ID for AT26DF321 mtd: txx9ndfmc: limit transfer bytes to 512 (ECC provides 6 bytes max) mtd: cfi_cmdset_0002: add support for Samsung K8D3x16UxC NOR chips mtd: cfi_cmdset_0002: add support for Samsung K8D6x16UxM NOR chips mtd: nand: ams-delta: drop omap_read/write, use ioremap mtd: m25p80: add debugging trace in sst_write mtd: nand: ams-delta: select for built-in by default mtd: OneNAND: lighten scary initial bad block messages mtd: OneNAND: OMAP2/3: add support for command line partitioning mtd: nand: rearrange ONFI revision checking, add ONFI 2.3 ... Fix up trivial conflict in drivers/mtd/Kconfig as per DavidW.
2011-01-06mtd: m25p80: Fix JEDEC ID for AT26DF321Aleksandr Koltsoff
The last byte of the ID should be zero for this chip. Was added in commit d0e8c47c58575b9131e786edb488fd029eba443e . Reported by Tomi Varjo. Signed-off-by: Aleksandr Koltsoff <aleksandr.koltsoff@ebts.fi> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-01-06mtd: m25p80: add debugging trace in sst_writeNicolas Ferre
Add a DEBUG(MTD_DEBUG_LEVEL2, ..) trace at beginning of sst_write() function as it is done in m25p80_write() function. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: fix section mismatch on sst25lFabio Estevam
Building the kernel with 'make CONFIG_DEBUG_SECTION_MISMATCH=y´ resulted in: WARNING: vmlinux.o(.data+0x15938): Section mismatch in reference from the variable sst25l_driver to the function .init.text:sst25l_probe() The variable sst25l_driver references the function __init sst25l_probe() If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, Fix the section mismatch. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: m25p80: Add support for Macronix MX25L25655EKevin Cernekee
Untested, but expected to be compatible with MX25L25635E which I did test. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: m25p80: Add support for Macronix MX25L25635EKevin Cernekee
This is a 256Mbit (32MiB) part so minor changes were made to support 4-byte addressing. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-12-03mtd: m25p80: Reinstate error print on unrecognized flashKevin Cernekee
Commit b34bc037b26e621e5fc13466767e4da110a7b3d3 removed the "unrecognized JEDEC id" error message, causing the probe function to silently abort if the flash ID is unrecognized. It is desirable to produce diagnostic output in this situation so that the user has some idea what went wrong. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-11-13block: clean up blkdev_get() wrappers and their usersTejun Heo
After recent blkdev_get() modifications, open_by_devnum() and open_bdev_exclusive() are simple wrappers around blkdev_get(). Replace them with blkdev_get_by_dev() and blkdev_get_by_path(). blkdev_get_by_dev() is identical to open_by_devnum(). blkdev_get_by_path() is slightly different in that it doesn't automatically add %FMODE_EXCL to @mode. All users are converted. Most conversions are mechanical and don't introduce any behavior difference. There are several exceptions. * btrfs now sets FMODE_EXCL in btrfs_device->mode, so there's no reason to OR it explicitly on blkdev_put(). * gfs2, nilfs2 and the generic mount_bdev() now set FMODE_EXCL in sb->s_mode. * With the above changes, sb->s_mode now always should contain FMODE_EXCL. WARN_ON_ONCE() added to kill_block_super() to detect errors. The new blkdev_get_*() functions are with proper docbook comments. While at it, add function description to blkdev_get() too. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Philipp Reisner <philipp.reisner@linbit.com> Cc: Neil Brown <neilb@suse.de> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Joern Engel <joern@lazybastard.org> Cc: Chris Mason <chris.mason@oracle.com> Cc: Jan Kara <jack@suse.cz> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: reiserfs-devel@vger.kernel.org Cc: xfs-masters@oss.sgi.com Cc: Alexander Viro <viro@zeniv.linux.org.uk>
2010-11-13block: make blkdev_get/put() handle exclusive accessTejun Heo
Over time, block layer has accumulated a set of APIs dealing with bdev open, close, claim and release. * blkdev_get/put() are the primary open and close functions. * bd_claim/release() deal with exclusive open. * open/close_bdev_exclusive() are combination of open and claim and the other way around, respectively. * bd_link/unlink_disk_holder() to create and remove holder/slave symlinks. * open_by_devnum() wraps bdget() + blkdev_get(). The interface is a bit confusing and the decoupling of open and claim makes it impossible to properly guarantee exclusive access as in-kernel open + claim sequence can disturb the existing exclusive open even before the block layer knows the current open if for another exclusive access. Reorganize the interface such that, * blkdev_get() is extended to include exclusive access management. @holder argument is added and, if is @FMODE_EXCL specified, it will gain exclusive access atomically w.r.t. other exclusive accesses. * blkdev_put() is similarly extended. It now takes @mode argument and if @FMODE_EXCL is set, it releases an exclusive access. Also, when the last exclusive claim is released, the holder/slave symlinks are removed automatically. * bd_claim/release() and close_bdev_exclusive() are no longer necessary and either made static or removed. * bd_link_disk_holder() remains the same but bd_unlink_disk_holder() is no longer necessary and removed. * open_bdev_exclusive() becomes a simple wrapper around lookup_bdev() and blkdev_get(). It also has an unexpected extra bdev_read_only() test which probably should be moved into blkdev_get(). * open_by_devnum() is modified to take @holder argument and pass it to blkdev_get(). Most of bdev open/close operations are unified into blkdev_get/put() and most exclusive accesses are tested atomically at the open time (as it should). This cleans up code and removes some, both valid and invalid, but unnecessary all the same, corner cases. open_bdev_exclusive() and open_by_devnum() can use further cleanup - rename to blkdev_get_by_path() and blkdev_get_by_devt() and drop special features. Well, let's leave them for another day. Most conversions are straight-forward. drbd conversion is a bit more involved as there was some reordering, but the logic should stay the same. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Neil Brown <neilb@suse.de> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Acked-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Philipp Reisner <philipp.reisner@linbit.com> Cc: Peter Osterlund <petero2@telia.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Jan Kara <jack@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <joel.becker@oracle.com> Cc: Alex Elder <aelder@sgi.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: dm-devel@redhat.com Cc: drbd-dev@lists.linbit.com Cc: Leo Chen <leochen@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Cc: Joern Engel <joern@logfs.org> Cc: reiserfs-devel@vger.kernel.org Cc: Alexander Viro <viro@zeniv.linux.org.uk>
2010-11-13mtd: fix bdev exclusive open bugs in block2mtd::add_device()Tejun Heo
There are two bdev exclusive open bugs. * open_bdev_exclusive() must not be called with NULL holder. Use dev as the holder. * open_by_devnum() doesn't open the bdev exclusively but block2mtd_free_device() always assumes it. Explicitly claim the bdev. The latter is rather clumsy but will be simplified with future blkdev_get/put() cleanups. - Updated to use local variable @mode to cache FMODE_* masks as suggested by Artem Bityutskiy. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: linux-mtd@lists.infradead.org Cc: Artem Bityutskiy <dedekind1@gmail.com>
2010-10-30mtd: fix build error in m25p80.cAndres Salomon
While building an x86 distro kernel, I hit the following: Kernel: arch/x86/boot/bzImage is ready (#7) ERROR: "of_mtd_parse_partitions" [drivers/mtd/devices/m25p80.ko] undefined! of_mtd_parse_partitions is defined with MTD_OF_PARTS, and that's only built on PPC and microblaze. The code in question should be wrapped w/ a stricter #ifdef. Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-30Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git Conflicts: drivers/mtd/mtd_blkdevs.c Merge Grant's device-tree bits so that we can apply the subsequent fixes. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-26block2mtd: dubious assignmentNicolas Kaiser
When block2mtd_erase fails, a duplicated assignment instantly changes instr->state from MTD_ERASE_FAILED to MTD_ERASE_DONE. It looks to me like this might not be intended, or is it? Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Acked-By: Joern Engel <joern@logfs.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: mtd/m25p80: add support to parse the partitions by OF node of/irq: of_irq.c needs to include linux/irq.h of/mips: Cleanup some include directives/files. of/mips: Add device tree support to MIPS of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch of/device: Rework to use common platform_device_alloc() for allocating devices of/xsysace: Fix OF probing on little-endian systems of: use __be32 types for big-endian device tree data of/irq: remove references to NO_IRQ in drivers/of/platform.c of/promtree: add package-to-path support to pdt of/promtree: add of_pdt namespace to pdt code of/promtree: no longer call prom_ functions directly; use an ops structure of/promtree: make drivers/of/pdt.c no longer sparc-only sparc: break out some PROM device-tree building code out into drivers/of of/sparc: convert various prom_* functions to use phandle sparc: stop exporting openprom.h header powerpc, of_serial: Endianness issues setting up the serial ports of: MTD: Fix OF probing on little-endian systems of: GPIO: Fix OF probing on little-endian systems
2010-10-25mtd: phram: use KBUILD_MODNAMEJoe Perches
Use the more standard #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt No change in output strings. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: m25p80.c: Add support for S25FL032P spi-nor flash devices.David Jander
Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25mtd: m25p80: Add support for the Winbond W25Q64Thierry Reding
This patch adds support for the Winbond W25Q64 serial flash. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24mtd: m25p80: Add support for two new Spansion SPI devices (S25FL-K)Gernot Hoyler
This patch adds support for Spansion S25FL016K and S25FL064K SPI flash. It has been tested with physical devices. Note that both parts exhibit a Winbond manufacturer ID so they might also be added to that section. Signed-off-by: Gernot Hoyler <Gernot.Hoyler@spansion.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-24Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Update broken web addresses in arch directory. Update broken web addresses in the kernel. Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget Revert "Fix typo: configuation => configuration" partially ida: document IDA_BITMAP_LONGS calculation ext2: fix a typo on comment in ext2/inode.c drivers/scsi: Remove unnecessary casts of private_data drivers/s390: Remove unnecessary casts of private_data net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data drivers/infiniband: Remove unnecessary casts of private_data drivers/gpu/drm: Remove unnecessary casts of private_data kernel/pm_qos_params.c: Remove unnecessary casts of private_data fs/ecryptfs: Remove unnecessary casts of private_data fs/seq_file.c: Remove unnecessary casts of private_data arm: uengine.c: remove C99 comments arm: scoop.c: remove C99 comments Fix typo configue => configure in comments Fix typo: configuation => configuration Fix typo interrest[ing|ed] => interest[ing|ed] Fix various typos of valid in comments ... Fix up trivial conflicts in: drivers/char/ipmi/ipmi_si_intf.c drivers/usb/gadget/rndis.c net/irda/irnet/irnet_ppp.c
2010-10-22mtd/m25p80: add support to parse the partitions by OF nodeMingkai Hu
Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> [grant.likely@secretlab.ca: wrap hunk with #ifdef CONFIG_OF] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-10-18Update broken web addresses in the kernel.Justin P. Mattock
The patch below updates broken web addresses in the kernel Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Ben Pfaff <blp@cs.stanford.edu> Acked-by: Hans J. Koch <hjk@linutronix.de> Reviewed-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-08-12mtd/m25p80: fix test for end of loopDan Carpenter
"plat_id" is always non-NULL here. There is a zero element on the end of the m25p_ids[] array and if we hit the end of the loop then plat_id points to that. This would lead to a NULL pointer dereference later on in the function. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-12mtd/m25p80: retlen is never NULLDan Carpenter
This is just a cleanup, it doesn't fix any bugs. These functions all check retlen inconsistently and it generates a warning in Smatch (http://smatch.sf.net). If retlen were ever NULL it would cause an oops and the code has been this way since 2006 so someone would have complained. Also I looked at other places that implemented the mtd read and write functions and they dereference retlen without checking. I removed the checks. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-08mtd: Remove obsolete <mtd/compatmac.h> includeDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: m25p80: add support for the Winbond W25Q32 SPI flash chipGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-08-06mtd: m25p80: add support for the Intel/Numonyx {16,32,64}0S33B SPI flash chipsGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: m25p80: add support for the EON EN25P{32, 64} SPI flash chipsGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04mtd: m25p80: Make jedec_probe() return proper errno valuesAnton Vorontsov
spi_write_then_read() may return its own return codes (e.g. -EIO), so let's propagate the value down to the probe(). Also, remove jedec == 0 check, it isn't needed as nowadays we use dedicated SPI device IDs for non-JEDEC flashes. Suggested-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@mvista.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-04mtd: m25p80: Fix false-positive probingAnton Vorontsov
Since commit 18c6182bae0acca220ed6611f741034d563cd19f ("Rework probing/JEDEC code"), m25p80 driver successfully registers chips even if JEDEC probing fails. This was needed to support non-JEDEC flashes. Though, it appears that some platforms (e.g. blackfin bf533 stamp[1]) used the old behavior to detect if there's any flash connected, so the driver have to fail on JEDEC probing errors. This patch restores the old behavior for JEDEC flashes, and adds "-nonjedec" SPI device IDs for M25Pxx flashes, so that the kernel still supports non-JEDEC flashes. [1] http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=5975 Reported-by: Mingquan Pan Reported-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@mvista.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02mtd: dataflash: remove casts from voidKulikov Vasiliy
Remove unnesessary casts from void*. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02mtd: m25p80: Add support for Macronix 25L8005Martin Michlmayr
Add support for Macronix 25L8005. Tested on a HP t5325 Thin Client. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02mtd: sst25l: check for null consistentlyDan Carpenter
The rest of the function assumes that "data" can be null. I don't know the code well enough to say whether it can actually be null, but there is no harm in checking here. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-14mtd: sst25l: fix multi-part messages with broken spi mastersH Hartley Sweeten
Some SPI masters (ep93xx) have limitations when using the SFRMOUT signal for the spi device chip select. The SFRMOUT signal is only asserted as long as the spi transmit fifo contains data. As soon as the last bit is clocked into the receive fifo it gets deasserted. The functions sst25l_status and sst25l_match_device use the API function spi_write_then_read to write a command to the flash then read the response back. This API function creates a two part spi message for the write then read. When this message is transferred the SFRMOUT signal ends up getting deasserted after the command phase. This causes the command to get aborted by the device so the read phase returns invalid data. By changing sst25l_status and sst25l_match_device to use a single transfer synchronous message, the SFRMOUT signal stays asserted during the entire message so the correct data always gets returned. This change will have no effect on SPI masters which use a chip select mechanism (GPIO's, etc.) which does stay asserted correctly. As a bonus, the single transfer synchronous messages complete faster than multi-part messages. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-10Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/mtd/mtdcore.c Pull in the bdi fixes and ARM platform changes that other outstanding patches depend on.
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