linux.git/drivers/mtd/devices, branch v5.12.5

mtd: st_spi_fsm: convert comma to semicolon

2021-02-01T17:58:38+00:00

Replace a comma between expression statements by a semicolon.

Signed-off-by: Zheng Yongjun 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20210108092325.19037-1-zhengyongjun3@huawei.com

mtd: phram: use div_u64_rem to stop overwrite len in phram_setup

2021-01-27T12:45:51+00:00

We now support user to set erase page size, and use do_div between len
and erase size to determine the reasonableness for the erase size.
However, do_div is a macro and will overwrite the value of len. Which
results a mtd device with unexcepted size. Fix it by use div_u64_rem.

Fixes: ffad560394de ("mtd: phram: Allow the user to set the erase page size.")
Signed-off-by: yangerkun 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20210125124936.651812-1-yangerkun@huawei.com

mtd: phram: Allow the user to set the erase page size.

2020-12-07T11:29:19+00:00

Permit the user to specify the erase page size as a parameter.
This solves two problems:

- phram can access images made by mkfs.jffs2.  mkfs.jffs2 won't
create images with erase sizes less than 8KiB; many architectures
define PAGE_SIZE as 4KiB.

- Allows more effective use of small capacity devices.  JFFS2
needs somewhere between 2 and 5 empty pages for garbage collection;
and for an NVRAM part with only 32KiB of space, a smaller erase page
allows much better utilization in applications where garbage collection
is important.

Signed-off-by: Patrick O'Grady 
Reviewed-by: Joern Engel 
Link: https://lore.kernel.org/lkml/CAJ7m5OqYv_=JB9NhHsqBsa8YU0DFRoP7C+W10PY22wonAGJK=A@mail.gmail.com/
[Guohua Zhong: fix token array index out of bounds and update patch for kernel master branch]
Signed-off-by: Guohua Zhong 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20201207095529.20896-1-zhongguohua1@huawei.com

mtd: devices: powernv_flash: Add function names to headers and fix 'dev'

2020-11-20T11:37:33+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/mtd/devices/powernv_flash.c:129: warning: Cannot understand  * @mtd: the device
 drivers/mtd/devices/powernv_flash.c:145: warning: Cannot understand  * @mtd: the device
 drivers/mtd/devices/powernv_flash.c:161: warning: Cannot understand  * @mtd: the device
 drivers/mtd/devices/powernv_flash.c:184: warning: Function parameter or member 'dev' not described in 'powernv_flash_set_driver_info'

Cc: Miquel Raynal 
Cc: Richard Weinberger 
Cc: Vignesh Raghavendra 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: linux-mtd@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Lee Jones 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-24-lee.jones@linaro.org

mtd: devices: docg3: Fix kernel-doc 'bad line' and 'excessive doc' issues

2020-11-20T11:37:30+00:00

This patch also places the descriptions in the correct order.

Fixes the following W=1 kernel build warning(s):

 drivers/mtd/devices/docg3.c:819: warning: bad line:
 drivers/mtd/devices/docg3.c:1799: warning: Excess function parameter 'base' description in 'doc_probe_device'

Cc: Robert Jarzmik 
Cc: Miquel Raynal 
Cc: Richard Weinberger 
Cc: Vignesh Raghavendra 
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Lee Jones 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-5-lee.jones@linaro.org

mtd: devices: phram: File headers are not good candidates for kernel-doc

2020-11-20T11:37:29+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/mtd/devices/phram.c:19: warning: Function parameter or member 'fmt' not described in 'pr_fmt'

Cc: Miquel Raynal 
Cc: Richard Weinberger 
Cc: Vignesh Raghavendra 
Cc: "Jochen Schäuble" 
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Lee Jones 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-3-lee.jones@linaro.org

mtd: spear_smi: Enable compile testing

2020-10-02T07:09:08+00:00

This driver does not contain any architecture specific code, enable
compile testing it.

Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20200928155715.14370-1-miquel.raynal@bootlin.com

mtd: spear_smi: use for_each_child_of_node() macro

2020-09-15T08:14:36+00:00

Use for_each_child_of_node() macro instead of open coding it.

Signed-off-by: Qinglang Miao 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20200914061324.3230-1-miaoqinglang@huawei.com

mtd: Avoid comma separated statements

2020-08-27T12:16:31+00:00

Use semicolons and braces.

Signed-off-by: Joe Perches 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/ae92f4c0507c470d9461886410dc7030192f9014.1598331149.git.joe@perches.com

lib/bch: Allow easy bit swapping

2020-05-24T18:48:11+00:00

It seems that several hardware ECC engine use a swapped representation
of bytes compared to software. This might having to do with how the
ECC engine is wired to the NAND controller or the order the bits are
passed to the hardware BCH logic.

This means that when the software BCH engine is working in conjunction
with data generated with hardware, sometimes we might need to swap the
bits inside bytes, eg:

    0x0A = b0000_1010 -> b0101_0000 = 0x50

Make it possible by adding a boolean to the BCH initialization routine.

Regarding the implementation itself, this is a rather simple approach
that can probably be enhanced in the future by preparing the
->a_{mod,pow}_tab tables with the swapping in mind.

Suggested-by: Boris Brezillon 
Signed-off-by: Miquel Raynal 
Reviewed-by: Boris Brezillon 
Link: https://lore.kernel.org/linux-mtd/20200519074549.23673-3-miquel.raynal@bootlin.com