linux-stable.git/drivers/mtd/mtdblock.c, branch v5.3 Linux kernel stable tree treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24T15:39:00+00:00 Thomas Gleixner tglx@linutronix.de 2019-05-23T09:14:39+00:00 fd534e9b5fdcf9bab33c03cb3ade1a1ae5b23c20 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 50 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091649.499889647@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  51 franklin st fifth floor boston ma 02110 1301 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 50 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091649.499889647@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mtd: change len type from signed to unsigned type 2018-12-03T10:32:26+00:00 huijin.park huijin.park@samsung.com 2018-11-29T04:19:51+00:00 bafae53817e7f3a47ed74cd03152e166aa639131 Callers of erase_write() always pass an unsigned int. So this patch avoids a cast to an int. Signed-off-by: huijin.park <huijin.park@samsung.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> 
Callers of erase_write() always pass an unsigned int.
So this patch avoids a cast to an int.

Signed-off-by: huijin.park <huijin.park@samsung.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
mtd: Unconditionally update ->fail_addr and ->addr in part_erase() 2018-03-15T17:22:26+00:00 Boris Brezillon boris.brezillon@bootlin.com 2018-02-12T21:03:10+00:00 8f347c4232d5fc097599b711a3385722a6834005 ->fail_addr and ->addr can be updated no matter the result of parent->_erase(), we just need to remove the code doing the same thing in mtd_erase_callback() to avoid adjusting those fields twice. Note that this can be done because all MTD users have been converted to not pass an erase_info->callback() and are thus only taking the ->addr_fail and ->addr fields into account after part_erase() has returned. While we're at it, get rid of the erase_info->mtd field which was only needed to let mtd_erase_callback() get the partition device back. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Richard Weinberger <richard@nod.at> 
->fail_addr and ->addr can be updated no matter the result of
parent->_erase(), we just need to remove the code doing the same thing
in mtd_erase_callback() to avoid adjusting those fields twice.

Note that this can be done because all MTD users have been converted to
not pass an erase_info->callback() and are thus only taking the
->addr_fail and ->addr fields into account after part_erase() has
returned.

While we're at it, get rid of the erase_info->mtd field which was only
needed to let mtd_erase_callback() get the partition device back.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
mtd: Stop assuming mtd_erase() is asynchronous 2018-03-15T17:21:07+00:00 Boris Brezillon boris.brezillon@bootlin.com 2018-02-12T21:03:09+00:00 884cfd9023ce6afe8bcf181ec988d8516eb32bf0 None of the mtd->_erase() implementations work in an asynchronous manner, so let's simplify MTD users that call mtd_erase(). All they need to do is check the value returned by mtd_erase() and assume that != 0 means failure. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Richard Weinberger <richard@nod.at> 
None of the mtd->_erase() implementations work in an asynchronous manner,
so let's simplify MTD users that call mtd_erase(). All they need to do
is check the value returned by mtd_erase() and assume that != 0 means
failure.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
mtd: mtdblock: remove the needless mtdblks_lock 2015-01-07T20:51:56+00:00 Gu Zheng guz.fnst@cn.fujitsu.com 2014-12-03T02:19:52+00:00 362376a7c65936835f39ff29b082a646d522efbc The global lock mtdblks_lock was used to protect the original mtdblks array to avoid race conditions. As the mtdblks array was already gone, but the mtdblks_lock is left, and it causes latency when open/release dev. So we need to remove it here. Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
The global lock mtdblks_lock was used to protect the original mtdblks
array to avoid race conditions. As the mtdblks array was already gone,
but the mtdblks_lock is left, and it causes latency when open/release dev.
So we need to remove it here.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd: Move major number definitions to major.h 2013-11-07T07:32:59+00:00 Ezequiel Garcia ezequiel.garcia@free-electrons.com 2013-10-13T21:05:23+00:00 f83c3838b9146b891d0405d3a83660e8f6aed02f This patch moves the char and block major number definitions to major.h to be with the rest of the major numbers. While doing this, include major.h in the files that need it. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
This patch moves the char and block major number definitions
to major.h to be with the rest of the major numbers.
While doing this, include major.h in the files that need it.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd: Use MTD_BLOCK_MAJOR instead of the magic number 2013-11-07T07:32:47+00:00 Ezequiel Garcia ezequiel.garcia@free-electrons.com 2013-10-08T23:59:08+00:00 2aabeb20ee4b2f4dce5d4b3855cea42d42c33772 Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd_blktrans_ops->release() should return void 2013-05-06T01:31:22+00:00 Al Viro viro@zeniv.linux.org.uk 2013-05-06T01:31:22+00:00 a8ca889ed9585894d53fd8919d80cbe8baff09e7 Both existing instances always return 0 and even if they didn't, the value would be lost on the way out. Just don't bother... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Both existing instances always return 0 and even if they didn't,
the value would be lost on the way out.  Just don't bother...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
mtd: mtdblock: call mtd_sync() only if opened for write 2012-03-26T23:11:11+00:00 Alexander Stein alexander.stein@systec-electronic.com 2012-01-10T12:26:58+00:00 70d5098a4b1551864dd7df43f67b7f606a1a6438 Because it is useless to call it if the device is opened in R/O mode, and also harmful: on CFI NOR flash it may block for long time waiting for erase operations to complete is another partition with a R/W file-system on this chip. Artem Bityutskiy: write commit message, amend the patch to match the latest tree (we use mtd_sync(), not mtd->sync() nowadays). Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
Because it is useless to call it if the device is opened in R/O mode, and also
harmful: on CFI NOR flash it may block for long time waiting for erase
operations to complete is another partition with a R/W file-system on this
chip.

Artem Bityutskiy: write commit message, amend the patch to match the latest
tree (we use mtd_sync(), not mtd->sync() nowadays).

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
mtd: do not use mtd->sync directly 2012-01-09T18:26:21+00:00 Artem Bityutskiy artem.bityutskiy@linux.intel.com 2011-12-30T14:35:35+00:00 327cf2922b4edf0439b219469722d2a502e37349 This patch teaches 'mtd_sync()' to do nothing when the MTD driver does not have the '->sync()' method, which allows us to remove all direct 'mtd->sync' accesses. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 
This patch teaches 'mtd_sync()' to do nothing when the MTD driver does
not have the '->sync()' method, which allows us to remove all direct
'mtd->sync' accesses.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>