mtd: map_ram: prevent use of point and unpoint when NO_XIP is set

When the DT property no-unaligned-direct-access is set, map->phys is set
to NO_XIP. With this property set, the flash should not be

mtd: map_ram: prevent use of point and unpoint when NO_XIP is set

When the DT property no-unaligned-direct-access is set, map->phys is set
to NO_XIP. With this property set, the flash should not be exposed
directly to MTD users, since it cannot be mapped.

map_ram() exposes the flash direct access unconditionally which leads to
access errors (when the bus width does not match the RAM width).

Therefore do not set point and unpoint when NO_XIP is set.

Signed-off-by: Shivamurthy Shastri <[email protected]>
Reviewed-by: Benedikt Spranger <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

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mtd: chips: Use SPDX license headers

Some of the files in mtd/chips do not have a SPDX license
header, presumably because the text string "GPL'd" didn't
parse with Thomas rulesets for magic license

mtd: chips: Use SPDX license headers

Some of the files in mtd/chips do not have a SPDX license
header, presumably because the text string "GPL'd" didn't
parse with Thomas rulesets for magic license tagging.

Fix this, the code is initially from RedHat which clearly
targeted the Linux kernel and intended it to be GPLv2.

In any case the original author appears to be David
Woodhouse who can then confirm this.

Cc: David Woodhouse <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

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mtd: Stop updating erase_info->state and calling mtd_erase_callback()

MTD users are no longer checking erase_info->state to determine if the
erase operation failed or succeeded. Moreover, mtd_erase_

mtd: Stop updating erase_info->state and calling mtd_erase_callback()

MTD users are no longer checking erase_info->state to determine if the
erase operation failed or succeeded. Moreover, mtd_erase_callback() is
now a NOP.

We can safely get rid of all mtd_erase_callback() calls and all
erase_info->state assignments. While at it, get rid of the
erase_info->state field, all MTD_ERASE_XXX definitions and the
mtd_erase_callback() function.

Signed-off-by: Boris Brezillon <[email protected]>
Reviewed-by: Richard Weinberger <[email protected]>
Reviewed-by: Miquel Raynal <[email protected]>
Acked-by: Bert Kenward <[email protected]>
---
Changes in v2:
- Address a few coding style issues (reported by Miquel)
- Remove comments that are no longer valid (reported by Miquel)

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mtd: remove the get_unmapped_area method

It is now unused.

Signed-off-by: Nicolas Pitre <[email protected]>
Reviewed-by: Richard Weinberger <[email protected]>
Acked-by: Boris Brezillon <boris.brezillon

mtd: remove the get_unmapped_area method

It is now unused.

Signed-off-by: Nicolas Pitre <[email protected]>
Reviewed-by: Richard Weinberger <[email protected]>
Acked-by: Boris Brezillon <[email protected]>
Tested-by: Chris Brandt <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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mtd: chips/map_ram.c: implement point and unpoint methods

This will allow for the removal of the get_unmapped_area method later.

Signed-off-by: Nicolas Pitre <[email protected]>
Reviewed-by: Richard

mtd: chips/map_ram.c: implement point and unpoint methods

This will allow for the removal of the get_unmapped_area method later.

Signed-off-by: Nicolas Pitre <[email protected]>
Reviewed-by: Richard Weinberger <[email protected]>
Acked-by: Boris Brezillon <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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mtd: map_ram: Enable mtdoops

Signed-off-by: Alessio Igor Bogani <[email protected]>
Signed-off-by: Brian Norris <[email protected]>

mtd: remove R/O checking duplication

Many drivers check whether the partition is R/O and return -EROFS if yes.
Let's stop having duplicated checks and move them to the API functions
instead.

And ag

mtd: remove R/O checking duplication

Many drivers check whether the partition is R/O and return -EROFS if yes.
Let's stop having duplicated checks and move them to the API functions
instead.

And again a bit of noise - deleted few too sparse newlines, sorry.

Signed-off-by: Artem Bityutskiy <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

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mtd: add leading underscore to all mtd functions

This patch renames all MTD functions by adding a "_" prefix:

mtd->erase -> mtd->_erase
mtd->read_oob -> mtd->_read_oob
...

The reason is that we ar

mtd: add leading underscore to all mtd functions

This patch renames all MTD functions by adding a "_" prefix:

mtd->erase -> mtd->_erase
mtd->read_oob -> mtd->_read_oob
...

The reason is that we are re-working the MTD API and from now on it is
an error to use MTD function pointers directly - we have a corresponding
API call for every pointer. By adding a leading "_" we achieve the following:

1. Make sure we convert every direct pointer users
2. A leading "_" suggests that this interface is internal and it becomes
less likely that people will use them directly
3. Make sure all the out-of-tree modules stop compiling and the owners
spot the big API change and amend them.

Signed-off-by: Artem Bityutskiy <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

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mtd: Remove obsolete <mtd/compatmac.h> include

Signed-off-by: David Woodhouse <[email protected]>

NOMMU: Present backing device capabilities for MTD chardevs

Present backing device capabilities for MTD character device files to allow
NOMMU mmap to do direct mapping where possible.

Signed-off-by

NOMMU: Present backing device capabilities for MTD chardevs

Present backing device capabilities for MTD character device files to allow
NOMMU mmap to do direct mapping where possible.

Signed-off-by: David Howells <[email protected]>
Tested-by: Bernd Schmidt <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

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MTD/JFFS2: remove CVS keywords

Once upon a time, the MTD repository was using CVS.

This patch therefore removes all usages of the no longer updated CVS
keywords from the MTD code.

This also includ

MTD/JFFS2: remove CVS keywords

Once upon a time, the MTD repository was using CVS.

This patch therefore removes all usages of the no longer updated CVS
keywords from the MTD code.

This also includes code that printed them to the user.

Signed-off-by: Adrian Bunk <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

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[MTD] replace kmalloc+memset with kzalloc

Signed-off-by: Yan Burman <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

[MTD] Initialize 'writesize'

Signed-off-by: Artem B. Bityutskiy <[email protected]>

[MTD] Restore MTD_ROM and MTD_RAM types

Let's not attempt the abolition of mtd->type until/unless it's properly
thought through. And certainly, let's not do it by halves.

Signed-off-by: David Woodh

[MTD] Restore MTD_ROM and MTD_RAM types

Let's not attempt the abolition of mtd->type until/unless it's properly
thought through. And certainly, let's not do it by halves.

Signed-off-by: David Woodhouse <[email protected]>

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[MTD] replace MTD_RAM with MTD_GENERIC_TYPE

Ram devices get the extra capability of MTD_NO_ERASE - not requiring
an explicit erase before writing to it. Currently only mtdblock uses
this capability

[MTD] replace MTD_RAM with MTD_GENERIC_TYPE

Ram devices get the extra capability of MTD_NO_ERASE - not requiring
an explicit erase before writing to it. Currently only mtdblock uses
this capability. Rest of the patch is a simple text replacement.

Signed-off-by: Joern Engel <[email protected]>

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Remove unchecked MTD flags

Several flags are set by some devices, but never checked. Remove them.

Signed-off-by: Jörn Engel <[email protected]>
Signed-off-by: David Woodhouse <dwmw2@infra

Remove unchecked MTD flags

Several flags are set by some devices, but never checked. Remove them.

Signed-off-by: Jörn Engel <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>

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Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in

Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

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