kernel/drivers/mtd/tests/nandbiterrs.c, branch linux-rolling-stable

mtd: always initialize 'stats' in struct mtd_oob_ops

2022-09-21T08:38:07Z

As the 'stats' field in struct mtd_oob_ops is used in conditional expressions, ensure it is always zero-initialized in all such structures to prevent random stack garbage from being interpreted as a pointer. Strictly speaking, this problem currently only needs to be fixed for struct mtd_oob_ops structures subsequently passed to mtd_read_oob(). However, this commit goes a step further and makes all instances of struct mtd_oob_ops in the tree zero-initialized, in hope of preventing future problems, e.g. if struct mtd_req_stats gets extended with write statistics at some point. Signed-off-by: Michał Kępień Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-3-kernel@kempniu.pl

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 326

2019-06-05T15:37:06Z

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 version 2 as published by the free software foundation 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 see the file copying if not write to the free software foundation 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 9 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Kate Stewart Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000435.832876118@linutronix.de Signed-off-by: Greg Kroah-Hartman

mtd: tests: nandbiterrs: Fix read_page return value

2018-01-09T09:56:29Z

The number of corrected bitflips is not correctly reported by the test until the bitflip threshold is reached. read_page() shall return the number of corrected bitflips, but mtd_read() returns 0 or a negative error, so we can't forward its return value. In the absence of an error we always have calculate the number of bitflips ourselves. Signed-off-by: Sascha Hauer Signed-off-by: Boris Brezillon

mtd: nand: Rename nand.h into rawnand.h

2017-08-13T08:11:49Z

We are planning to share more code between different NAND based devices (SPI NAND, OneNAND and raw NANDs), but before doing that we need to move the existing include/linux/mtd/nand.h file into include/linux/mtd/rawnand.h so we can later create a nand.h header containing all common structure and function prototypes. Signed-off-by: Boris Brezillon Signed-off-by: Peter Pan Acked-by: Vladimir Zapolskiy Acked-by: Alexander Sverdlin Acked-by: Wenyou Yang Acked-by: Krzysztof Kozlowski Acked-by: Han Xu Acked-by: H Hartley Sweeten Acked-by: Shawn Guo Acked-by: Gregory CLEMENT Acked-by: Neil Armstrong Acked-by: Masahiro Yamada Acked-By: Harvey Hunt Acked-by: Tony Lindgren Acked-by: Krzysztof Halasa

mtd: nandbiterrs: Support for NAND biterrors test on platforms without raw write

2016-07-11T06:40:13Z

Support for NAND biterrors test on platforms without raw write While the default test mode relies on raw write (mtd_write_oob) to introduce bit errors into a page, the rewrite test mode doesn't need it. Changed the overwrite test to use normal writes. The default test mode is unaffected and still requires raw write as before. Signed-off-by: Iwo Mergler Signed-off-by: Boris Brezillon

mtd: Make MTD tests cancelable

2015-04-06T01:12:53Z

I always go nuts when I start an MTD test on a slow device and have to wait forever until it finishes. From the debug output I already know what the issue is but I have to wait or reset the board hard. Resetting is often not an option (remote access, you don't want lose the current state, etc...). The solution is easy, check for pending signals at key positions in the code. Using that one can even stop a test by pressing CTRL-C as insmod/modprobe have SIGINT pending. Signed-off-by: Richard Weinberger Signed-off-by: Brian Norris

mtd: tests: fix integer overflow issues

2014-08-19T18:53:08Z

These multiplications are done with 32-bit arithmetic, then converted to 64-bit. We should widen the integers first to prevent overflow. This could be a problem for large (>4GB) MTD's. Detected by Coverity. Signed-off-by: Brian Norris Cc: Akinobu Mita

mtd: nand: add a helper to detect the nand type

2013-10-27T23:27:06Z

This helper detects that whether the mtd's type is nand type. Now, it's clear that the MTD_NANDFLASH stands for SLC nand only. So use the mtd_type_is_nand() to replace the old check method to do the nand type (include the SLC and MLC) check. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: tests: incorporate error message for mtdtest_write()

2013-08-30T20:36:06Z

All callers of mtdtest_write() print the same error message on failure. This incorporates the error message to mtdtest_write() and removes them from the callers. Signed-off-by: Akinobu Mita Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: mtd_nandbiterrs: use mtd_test helpers

2013-08-30T20:34:25Z

Use mtdtest_write() and mtdtest_erase_eraseblock() in mtd_test helpers. Signed-off-by: Akinobu Mita Cc: Iwo Mergler Cc: Brian Norris Cc: Vikram Narayanan Cc: Adrian Hunter Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse