linux-toradex.git/drivers/base/devres.c, branch v4.20-rc6

devres: Align data[] to ARCH_KMALLOC_MINALIGN

2018-11-11T19:40:04+00:00

Initially we bumped into problem with 32-bit aligned atomic64_t
on ARC, see [1]. And then during quite lengthly discussion Peter Z.
mentioned ARCH_KMALLOC_MINALIGN which IMHO makes perfect sense.
If allocation is done by plain kmalloc() obtained buffer will be
ARCH_KMALLOC_MINALIGN aligned and then why buffer obtained via
devm_kmalloc() should have any other alignment?

This way we at least get the same behavior for both types of
allocation.

[1] http://lists.infradead.org/pipermail/linux-snps-arc/2018-July/004009.html
[2] http://lists.infradead.org/pipermail/linux-snps-arc/2018-July/004036.html

Signed-off-by: Alexey Brodkin 
Cc: Greg Kroah-Hartman 
Cc: Geert Uytterhoeven 
Cc: David Laight 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Vineet Gupta 
Cc: Will Deacon 
Cc: Greg KH 
Cc:  # 4.8+
Signed-off-by: Greg Kroah-Hartman

devres: provide devm_kstrdup_const()

2018-10-16T10:53:27+00:00

Provide a resource managed version of kstrdup_const(). This variant
internally calls devm_kstrdup() on pointers that are outside of
.rodata section and returns the string as is otherwise.

Make devm_kfree() check if the passed pointer doesn't point to .rodata
and if so - don't actually destroy the resource.

Signed-off-by: Bartosz Golaszewski 
Reviewed-by: Bjorn Andersson 
Acked-by: Mike Rapoport 
Acked-by: Rasmus Villemoes 
Reviewed-by: Geert Uytterhoeven 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Greg Kroah-Hartman

devres: constify p in devm_kfree()

2018-10-16T10:53:27+00:00

Make devm_kfree() signature uniform with that of kfree(). To avoid
compiler warnings: cast p to (void *) when calling devres_destroy().

Signed-off-by: Bartosz Golaszewski 
Reviewed-by: Bjorn Andersson 
Reviewed-by: Geert Uytterhoeven 
Acked-by: Rasmus Villemoes 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Greg Kroah-Hartman

device: Use overflow helpers for devm_kmalloc()

2018-06-05T19:16:51+00:00

Use the overflow helpers both in existing multiplication-using inlines as
well as the addition-overflow case in the core allocation routine.

Signed-off-by: Kees Cook

driver core: Remove redundant license text

2017-12-07T17:36:44+00:00

Now that the SPDX tag is in all driver core files, that identifies the
license in a specific and legally-defined manner.  So the extra GPL text
wording can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Johannes Berg 
Cc: "Luis R. Rodriguez" 
Signed-off-by: Greg Kroah-Hartman

driver core: add SPDX identifiers to all driver core files

2017-12-07T17:36:43+00:00

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the driver core files files with the correct SPDX license
identifier based on the license text in the file itself.  The SPDX
identifier is a legally binding shorthand, which can be used instead of
the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Johannes Berg 
Cc: "Luis R. Rodriguez" 
Cc: William Breathitt Gray 
Cc: Thomas Gleixner 
Cc: Kate Stewart 
Cc: Philippe Ombredanne 
Signed-off-by: Greg Kroah-Hartman

devres: add devm_alloc_percpu()

2016-11-16T03:34:25+00:00

Introduce managed counterparts for alloc_percpu() and free_percpu().
Add devm_alloc_percpu() and devm_free_percpu() into the managed
interfaces list.

Signed-off-by: Madalin Bucur 
Signed-off-by: David S. Miller

devm: make allocations numa aware by default

2015-10-09T21:00:33+00:00

Given we already have a device just use dev_to_node() to provide hint
allocations for devres.  However, current devres_alloc() users will need
to explicitly opt-in with devres_alloc_node().

Reviewed-by: Tejun Heo 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Dan Williams

devres: fix devres_get()

2015-08-05T22:11:48+00:00

Currently, devres_get() passes devres_free() the pointer to devres,
but devres_free() should be given with the pointer to resource data.

Fixes: 9ac7849e35f7 ("devres: device resource management")
Signed-off-by: Masahiro Yamada 
Acked-by: Tejun Heo 
Cc: stable  # 2.6.21+
Signed-off-by: Greg Kroah-Hartman

devres: Improve devm_kasprintf()/kvasprintf() support

2014-09-24T06:32:50+00:00

  - Add devm_kasprintf()/kvasprintf(), introduced by commit
    75f2a4ead5d5890ada9c2663a70fb58613c0d9f2 ("devres: Add
    devm_kasprintf and devm_kvasprintf API"), to
    Documentation/driver-model/devres.txt,
  - Improve kernel doc: the string is not an existing formatted string,
    but is formatted into the newly-allocated buffer,
  - Add a __printf() annotation to devm_kasprintf(), so the compiler
    will verify the format string argument types.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Greg Kroah-Hartman