linux-toradex.git/lib/devres.c, branch toradex_vf_4.1-next

lib: devres: add a helper function for ioremap_wc

2015-03-16T20:11:32+00:00

Implement a resource managed writecombine ioremap function.

Signed-off-by: Abhilash Kesavan 
Acked-by: Catalin Marinas 
Signed-off-by: Greg Kroah-Hartman

devres: support sizes greater than an unsigned long

2014-11-07T18:09:07+00:00

As in 4f452e8aa492c0b8028ca9b4bdb4d018ba28c6c7, use resource_size_t
to accomodate sizes greater than the size of an unsigned long int on
platforms that have more than 32 bit physical addresses.

Signed-off-by: Cristian Stoica 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-08-06T00:46:42+00:00

Pull timer and time updates from Thomas Gleixner:
"A rather large update of timers, timekeeping & co

- Core timekeeping code is year-2038 safe now for 32bit machines.
Now we just need to fix all in kernel users and the gazillion of
user space interfaces which rely on timespec/timeval :)

- Better cache layout for the timekeeping internal data structures.

- Proper nanosecond based interfaces for in kernel users.

- Tree wide cleanup of code which wants nanoseconds but does hoops
and loops to convert back and forth from timespecs. Some of it
definitely belongs into the ugly code museum.

- Consolidation of the timekeeping interface zoo.

- A fast NMI safe accessor to clock monotonic for tracing. This is a
long standing request to support correlated user/kernel space
traces. With proper NTP frequency correction it's also suitable
for correlation of traces accross separate machines.

- Checkpoint/restart support for timerfd.

- A few NOHZ[_FULL] improvements in the [hr]timer code.

- Code move from kernel to kernel/time of all time* related code.

- New clocksource/event drivers from the ARM universe. I'm really
impressed that despite an architected timer in the newer chips SoC
manufacturers insist on inventing new and differently broken SoC
specific timers.

[ Ed. "Impressed"? I don't think that word means what you think it means ]

- Another round of code move from arch to drivers. Looks like most
of the legacy mess in ARM regarding timers is sorted out except for
a few obnoxious strongholds.

- The usual updates and fixlets all over the place"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits)
timekeeping: Fixup typo in update_vsyscall_old definition
clocksource: document some basic timekeeping concepts
timekeeping: Use cached ntp_tick_length when accumulating error
timekeeping: Rework frequency adjustments to work better w/ nohz
timekeeping: Minor fixup for timespec64->timespec assignment
ftrace: Provide trace clocks monotonic
timekeeping: Provide fast and NMI safe access to CLOCK_MONOTONIC
seqcount: Add raw_write_seqcount_latch()
seqcount: Provide raw_read_seqcount()
timekeeping: Use tk_read_base as argument for timekeeping_get_ns()
timekeeping: Create struct tk_read_base and use it in struct timekeeper
timekeeping: Restructure the timekeeper some more
clocksource: Get rid of cycle_last
clocksource: Move cycle_last validation to core code
clocksource: Make delta calculation a function
wireless: ath9k: Get rid of timespec conversions
drm: vmwgfx: Use nsec based interfaces
drm: i915: Use nsec based interfaces
timekeeping: Provide ktime_get_raw()
hangcheck-timer: Use ktime_get_ns()
...

of: Provide a function to request and map memory

2014-07-23T10:02:30+00:00

A call to of_iomap does not request the memory region. This patch adds the
function of_io_request_and_map which requests the memory region before
mapping it.

Signed-off-by: Matthias Brugger 
Suggested-by: Thomas Gleixner 
Suggested-by: Rob Herring 
Acked-by: Rob Herring 
Signed-off-by: Daniel Lezcano

devres: remove devm_request_and_ioremap()

2014-06-20T03:01:36+00:00

devm_request_and_ioremap() was obsoleted by the commit 7509657
("lib: devres: Introduce devm_ioremap_resource()") and has been
deprecated for a long time. So, let's remove this function.
In addition, all usages of devm_request_and_ioremap() are also
removed.

Signed-off-by: Jingoo Han 
Signed-off-by: Greg Kroah-Hartman

lib/devres.c: fix checkpatch warnings

2014-05-23T22:28:01+00:00

Fix 3 checkpatch warnings:
'ERROR: "foo * const * bar" should be "foo * const *bar"'

Cc: Andrew Morton 
Signed-off-by: Fabian Frederick 
Signed-off-by: Greg Kroah-Hartman

lib/devres.c: use dev in devm_request_and_ioremap

2014-05-23T22:28:01+00:00

devm_request_and_ioremap was the only function to use device
instead of dev. This fixes kernel-doc warning.

Cc: Andrew Morton 
Signed-off-by: Fabian Frederick 
Signed-off-by: Greg Kroah-Hartman

Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP

2014-04-07T23:36:11+00:00

If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally.  So
HAS_IOPORT_MAP is the better name for this.

Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available.  I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.

The changes in this commit were done using:

	$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'

Signed-off-by: Uwe Kleine-König 
Acked-by: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/devres.c: fix some sparse warnings

2014-04-03T23:21:11+00:00

Having a discussion about sparse warnings in the kernel, and that we
should clean them up, I decided to pick a random file to do so.  This
happened to be devres.c which gives the following warnings:

    CHECK   lib/devres.c
  lib/devres.c:83:9: warning: cast removes address space of expression
  lib/devres.c:117:31: warning: incorrect type in return expression (different address spaces)
  lib/devres.c:117:31:    expected void [noderef] *
  lib/devres.c:117:31:    got void *
  lib/devres.c:125:31: warning: incorrect type in return expression (different address spaces)
  lib/devres.c:125:31:    expected void [noderef] *
  lib/devres.c:125:31:    got void *
  lib/devres.c:136:26: warning: incorrect type in assignment (different address spaces)
  lib/devres.c:136:26:    expected void [noderef] *[assigned] dest_ptr
  lib/devres.c:136:26:    got void *
  lib/devres.c:226:9: warning: cast removes address space of expression

Mostly it's just the use of typecasting to void * without adding
__force, or returning ERR_PTR(-ESOMEERR) without typecasting to a
__iomem type.

I added a helper macro IOMEM_ERR_PTR() that does the typecast to make
the code a little nicer than adding ugly typecasts to the code.

Signed-off-by: Steven Rostedt 
Cc: Tejun Heo 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/devres.c: fix misplaced #endif

2013-02-28T03:10:09+00:00

A misplaced #endif causes link errors related to pcim_*() functions.

This is because pcim_*() functions are related to CONFIG_PCI option,
however these are not related to CONFIG_HAS_IOPORT option.  Therefore,
when CONFIG_PCI is enabled and CONFIG_HAS_IOPORT is not enabled, it makes
link errors related to pcim_*() functions as below:

drivers/ata/libata-sff.c:3233: undefined reference to `pcim_iomap_regions'
drivers/ata/libata-sff.c:3238: undefined reference to `pcim_iomap_table'
drivers/built-in.o: In function `ata_pci_sff_init_host':
drivers/ata/libata-sff.c:2318: undefined reference to `pcim_iomap_regions'
drivers/ata/libata-sff.c:2329: undefined reference to `pcim_iomap_table

Signed-off-by: Jingoo Han 
Cc: Greg KH 
Cc: Tejun Heo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds