linux-stable.git/drivers/mtd, branch linux-2.6.34.y Linux kernel stable tree mtd: cafe_nand: fix an & vs | mistake 2014-02-10T21:11:33+00:00 Dan Carpenter dan.carpenter@oracle.com 2012-06-09T16:08:25+00:00 55a95b59f4728dd3739accd091cd9a775870abc0 commit 48f8b641297df49021093763a3271119a84990a2 upstream. The intent here was clearly to set result to true if the 0x40000000 flag was set. But instead there was a | vs & typo and we always set result to true. Artem: check the spec at wiki.laptop.org/images/5/5c/88ALP01_Datasheet_July_2007.pdf and this fix looks correct. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> 
commit 48f8b641297df49021093763a3271119a84990a2 upstream.

The intent here was clearly to set result to true if the 0x40000000 flag
was set.  But instead there was a | vs & typo and we always set result
to true.

Artem: check the spec at
wiki.laptop.org/images/5/5c/88ALP01_Datasheet_July_2007.pdf
and this fix looks correct.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
mtd: mtdchar: add missing initializer on raw write 2012-08-17T19:35:52+00:00 Peter Wippich pewi@gw-instruments.de 2011-06-06T13:50:58+00:00 c6817c1778ce37b9bb5a65881675f4cae17312f8 commit bf5140817b2d65faac9b32fc9057a097044ac35b upstream. On writes in MODE_RAW the mtd_oob_ops struct is not sufficiently initialized which may cause nandwrite to fail. With this patch it is possible to write raw nand/oob data without additional ECC (either for testing or when some sectors need different oob layout e.g. bootloader) like nandwrite -n -r -o /dev/mtd0 <myfile> Signed-off-by: Peter Wippich <pewi@gw-instruments.de> Tested-by: Ricard Wanderlof <ricardw@axis.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> 
commit bf5140817b2d65faac9b32fc9057a097044ac35b upstream.

On writes in MODE_RAW the mtd_oob_ops struct is not sufficiently
initialized which may cause nandwrite to fail. With this patch
it is possible to write raw nand/oob data without additional ECC
(either for testing or when some sectors need different oob layout
e.g. bootloader) like
nandwrite  -n -r -o  /dev/mtd0 <myfile>

Signed-off-by: Peter Wippich <pewi@gw-instruments.de>
Tested-by: Ricard Wanderlof <ricardw@axis.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
mtd: mtdconcat: fix NAND OOB write 2012-05-17T15:20:26+00:00 Felix Radensky felix@embedded-sol.com 2011-04-24T22:57:12+00:00 4c10301761cd9f4aedfeb1c8001613da33783c77 commit 431e1ecabddcd7cbba237182ddf431771f98bb4c upstream. Currently mtdconcat is broken for NAND. An attemtpt to create JFFS2 filesystem on concatenation of several NAND devices fails with OOB write errors. This patch fixes that problem. Signed-off-by: Felix Radensky <felix@embedded-sol.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> 
commit 431e1ecabddcd7cbba237182ddf431771f98bb4c upstream.

Currently mtdconcat is broken for NAND. An attemtpt to create
JFFS2 filesystem on concatenation of several NAND devices fails
with OOB write errors. This patch fixes that problem.

Signed-off-by: Felix Radensky <felix@embedded-sol.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
mtd: add "platform:" prefix for platform modalias 2011-06-26T16:47:00+00:00 Axel Lin axel.lin@gmail.com 2011-03-07T03:04:24+00:00 ab16f3c757a8aeac8b0ee935e6de99ea68388fc1 commit c804c733846572ca85c2bba60c7fe6fa024dff18 upstream. Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS with "platform:"), the platform modalias is prefixed with "platform:". Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> 
commit c804c733846572ca85c2bba60c7fe6fa024dff18 upstream.

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS
with "platform:"), the platform modalias is prefixed with "platform:".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
pxa3xx: fix ns2cycle equation 2010-08-26T23:43:31+00:00 Axel Lin axel.lin@gmail.com 2010-08-16T08:09:09+00:00 ecc2af8b063e296848fa998ddeaa1e41359ed8e3 commit 93b352fce679945845664b56b0c3afbd655a7a12 upstream. Test on a PXA310 platform with Samsung K9F2G08X0B NAND flash, with tCH=5 and clk is 156MHz, ns2cycle(5, 156000000) returns -1. ns2cycle returns negtive value will break NDTR0_tXX macros. After checking the commit log, I found the problem is introduced by commit 5b0d4d7c8a67c5ba3d35e6ceb0c5530cc6846db7 "[MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately" To get num of clock cycles, we use below equation: num of clock cycles = time (ns) / one clock cycle (ns) + 1 We need to add 1 cycle here because integer division will truncate the result. It is possible the developers set the Min values in SPEC for timing settings. Thus the truncate may cause problem, and it is safe to add an extra cycle here. The various fields in NDTR{01} are in units of clock ticks minus one, thus we should subtract 1 cycle then. Thus the correct equation should be: num of clock cycles = time (ns) / one clock cycle (ns) + 1 - 1 = time (ns) / one clock cycle (ns) Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Lei Wen <leiwen@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
commit 93b352fce679945845664b56b0c3afbd655a7a12 upstream.

Test on a PXA310 platform with Samsung K9F2G08X0B NAND flash,
with tCH=5 and clk is 156MHz, ns2cycle(5, 156000000) returns -1.

ns2cycle returns negtive value will break NDTR0_tXX macros.

After checking the commit log, I found the problem is introduced by
commit 5b0d4d7c8a67c5ba3d35e6ceb0c5530cc6846db7
"[MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately"

To get num of clock cycles, we use below equation:
num of clock cycles = time (ns) / one clock cycle (ns) + 1
We need to add 1 cycle here because integer division will truncate the result.
It is possible the developers set the Min values in SPEC for timing settings.
Thus the truncate may cause problem, and it is safe to add an extra cycle here.

The various fields in NDTR{01} are in units of clock ticks minus one,
thus we should subtract 1 cycle then.

Thus the correct equation should be:
num of clock cycles = time (ns) / one clock cycle (ns) + 1 - 1
                    = time (ns) / one clock cycle (ns)

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
mtd: gen_nand: fix support for multiple chips 2010-08-13T20:27:31+00:00 Marek Vasut marek.vasut@gmail.com 2010-07-28T05:36:54+00:00 1dfb38cdd08308d7a382677e5861b89b3065301e commit 81cbb0b17796d81cbd92defe113cf2a7c7a21fbb upstream. This patch corrects a problem where gen_nand driver assumed there can be only one chip and ignored the pdata->chip.nr_chips value. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
commit 81cbb0b17796d81cbd92defe113cf2a7c7a21fbb upstream.

This patch corrects a problem where gen_nand driver assumed there can be only
one chip and ignored the pdata->chip.nr_chips value.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[MTD] Remove zero-length files mtdbdi.c and internal.ho 2010-05-05T19:25:12+00:00 Jeff Garzik jeff@garzik.org 2010-05-05T19:25:12+00:00 0fd6b32b3b2f5c1bfd412de7b5fd040fb31b6712 Both were "removed" in commit a33eb6b91034c95b9b08576f68be170f995b2c7d. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
Both were "removed" in commit a33eb6b91034c95b9b08576f68be170f995b2c7d.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-04-28T14:56:05+00:00 Linus Torvalds torvalds@linux-foundation.org 2010-04-28T14:56:05+00:00 970b06485ffee36aa3549dfe4c6b2a2c2118354d * 'for-linus' of git://git.kernel.dk/linux-2.6-block: coda: move backing-dev.h kernel include inside __KERNEL__ mtd: ensure that bdi entries are properly initialized and registered Move mtd_bdi_*mappable to mtdcore.c btrfs: convert to using bdi_setup_and_register() Catch filesystems lacking s_bdi drbd: Terminate a connection early if sending the protocol fails drbd: fix memory leak Fix JFFS2 sync silent failure smbfs: add bdi backing to mount session ncpfs: add bdi backing to mount session exofs: add bdi backing to mount session ecryptfs: add bdi backing to mount session coda: add bdi backing to mount session cifs: add bdi backing to mount session afs: add bdi backing to mount session. 9p: add bdi backing to mount session bdi: add helper function for doing init and register of a bdi for a file system block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer 
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  coda: move backing-dev.h kernel include inside __KERNEL__
  mtd: ensure that bdi entries are properly initialized and registered
  Move mtd_bdi_*mappable to mtdcore.c
  btrfs: convert to using bdi_setup_and_register()
  Catch filesystems lacking s_bdi
  drbd: Terminate a connection early if sending the protocol fails
  drbd: fix memory leak
  Fix JFFS2 sync silent failure
  smbfs: add bdi backing to mount session
  ncpfs: add bdi backing to mount session
  exofs: add bdi backing to mount session
  ecryptfs: add bdi backing to mount session
  coda: add bdi backing to mount session
  cifs: add bdi backing to mount session
  afs: add bdi backing to mount session.
  9p: add bdi backing to mount session
  bdi: add helper function for doing init and register of a bdi for a file system
  block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer
mtd: ensure that bdi entries are properly initialized and registered 2010-04-27T07:51:30+00:00 Jens Axboe jens.axboe@oracle.com 2010-04-27T07:49:47+00:00 0661b1ac5d48eb47c8a5948c0554fea25e0895ab They will be holding dirty inodes and be responsible for flushing them out, so they need to be setup properly. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> 
They will be holding dirty inodes and be responsible for flushing
them out, so they need to be setup properly.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Move mtd_bdi_*mappable to mtdcore.c 2010-04-27T07:50:58+00:00 Jörn Engel joern@logfs.org 2010-04-27T07:40:52+00:00 a33eb6b91034c95b9b08576f68be170f995b2c7d Removes one .h and one .c file that are never used outside of mtdcore.c. Signed-off-by: Joern Engel <joern@logfs.org> Edited to remove on leftover debug define. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> 
Removes one .h and one .c file that are never used outside of
mtdcore.c.

Signed-off-by: Joern Engel <joern@logfs.org>

Edited to remove on leftover debug define.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>