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controller
Use devm_hwspin_lock_register() to register the hwlock controller instead of
unregistering the hwlock controller explicitly when removing the device.
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use devm_kzalloc() to allocate memory.
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together, which can simpify the code.
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Add the 'in_atomic' mode which can be called from an atomic context.
This mode relies on the existing 'raw' mode (no lock, no preemption/irq
disabling) with the difference that the timeout is not based on jiffies
(jiffies won't increase when irq are disabled) but handled with
busy-waiting udelay() calls.
Signed-off-by: Fabien Dessenne <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Implement this optional ops, called by hwspinlock core while spinning on
a lock, between two successive invocations of trylock().
Reviewed-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Fabien Dessenne <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Do not wait for hwspinlock device registration if it is not available
for use.
Acked-by: Suman Anna <[email protected]>
Signed-off-by: Fabien Dessenne <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Add a debug level trace statement in the OMAP HwSpinlock driver
probe function to print the number of hwlocks on a successful
registration.
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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A HwSpinlock IP is also present on the newer TI K3 AM65x and J721E
family of SoCs within the Main NavSS sub-module. Reuse the existing
OMAP Hwspinlock driver to extend the support for this IP on K3 AM65x
SoCs as well. The IP has slightly different bit-fields in the
SYSCONFIG and SYSSTATUS registers.
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: f24fcff1d267 ("hwspinlock: add STM32 hwspinlock device")
Acked-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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This patch adds support of hardware semaphores for stm32mp1 SoC.
The hardware block provides 32 semaphores.
Signed-off-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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The commit 4f1acd758b08 ("hwspinlock: Add devm_xxx() APIs to request/free
hwlock") introduces one bug, that will return one error pointer if failed
to request one hwlock, but we expect NULL pointer on error for consumers.
This patch will fix this issue.
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Fix one comment mistake with correct function names.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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This patch introduces devm_hwspin_lock_register() and devm_hwspin_lock_unregister()
interfaces to help to register or unregister one hardware spinlock controller, that
will help to simplify the cleanup code for hwspinlock drivers.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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This patch introduces some devm_xxx() APIs to help to request or free
the hwlocks, which will help to simplify the cleanup code for drivers
requesting one hwlock, ensuring that the hwlock is automatically freed
whenever the device is unbound.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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The hardware spinlock binding already supplied the 'hwlock-names' property
to match and get a specific hwlock, but did not supply one API for users
to get a specific hwlock by the hwlock name. So this patch introduces one
API to support this requirement.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Pull hwspinlock updates from Bjorn Andersson:
"In addition to migrating the files to use SPDX license headers this
introduces the ability for clients to operate a hwlock without the
framework taking any additional locks"
* tag 'hwlock-v4.18' of git://github.com/andersson/remoteproc:
hwspinlock/u8500: Switch to SPDX license identifier
hwspinlock: sprd: Switch to SPDX license identifier
hwspinlock/sirf: Switch to SPDX license identifier
hwspinlock: qcom: Switch to SPDX license identifier
hwspinlock/omap: Switch to SPDX license identifier
hwspinlock/core: Switch to SPDX license identifier
hwspinlock: Introduce one new mode for hwspinlock
hwspinlock: Convert to use 'switch' statement
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Replaces open-coded struct size calculations with struct_size() for
devm_*, f2fs_*, and sock_* allocations. Automatically generated (and
manually adjusted) from the following Coccinelle script:
// Direct reference to struct field.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)
// mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL);
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)
// Same pattern, but can't trivially locate the trailing element name,
// or variable name.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
expression SOMETHING, COUNT, ELEMENT;
@@
- alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP)
+ alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP)
Signed-off-by: Kees Cook <[email protected]>
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One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct foo {
int stuff;
void *entry[];
};
instance = kmalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = kmalloc(struct_size(instance, entry, count), GFP_KERNEL);
This patch makes the changes for kmalloc()-family (and kvmalloc()-family)
uses. It was done via automatic conversion with manual review for the
"CHECKME" non-standard cases noted below, using the following Coccinelle
script:
// pkey_cache = kmalloc(sizeof *pkey_cache + tprops->pkey_tbl_len *
// sizeof *pkey_cache->table, GFP_KERNEL);
@@
identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc";
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP)
+ alloc(struct_size(VAR, ELEMENT, COUNT), GFP)
// mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL);
@@
identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc";
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@
- alloc(sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP)
+ alloc(struct_size(VAR, ELEMENT, COUNT), GFP)
// Same pattern, but can't trivially locate the trailing element name,
// or variable name.
@@
identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc";
expression GFP;
expression SOMETHING, COUNT, ELEMENT;
@@
- alloc(sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP)
+ alloc(CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP)
Signed-off-by: Kees Cook <[email protected]>
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Use the appropriate SPDX license identifier in the U8500 HWSEM
driver source file and drop the previous boilerplate license text.
Cc: Mathieu J. Poirier <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the appropriate SPDX license identifiers in the Spreadtrum hardware
spinlock driver source file and drop the previous boilerplate license text.
Cc: Baolin Wang <[email protected]>
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the appropriate SPDX license identifier in the CSR's SIRF hardware
spinlock driver source file and drop the previous boilerplate license text.
Cc: Wei Chen <[email protected]>
Cc: Barry Song <[email protected]>
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the appropriate SPDX license identifier in the Qualcomm Hwspinlock
driver source file and drop the previous boilerplate license text.
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the appropriate SPDX license identifier in the OMAP hwspinlock
driver source file and drop the previous boilerplate license text.
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Use the appropriate SPDX license identifier in the Hwspinlock core
driver source files and drop the previous boilerplate license text.
Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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In some scenarios, user need do some time-consuming or sleepable
operations under the hardware spinlock protection for synchronization
between the multiple subsystems.
For example, there is one PMIC efuse on Spreadtrum platform, which
need to be accessed under one hardware lock. But during the hardware
lock protection, the efuse operation is time-consuming to almost 5 ms,
so we can not disable the interrupts or preemption so long in this case.
Thus we can introduce one new mode to indicate that we just acquire the
hardware lock and do not disable interrupts or preemption, meanwhile we
should force user to protect the hardware lock with mutex or spinlock to
avoid dead-lock.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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We have different hwspinlock modes to select, thus it will be more
readable to handle different modes with using 'switch' statement
instead of 'if' statement.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Pull hwspinlock update from Bjorn Andersson:
"This changes the HWSPINLOCK core Kconfig option to bool, to aid when
other core code depends on it"
* tag 'hwlock-v4.15' of git://github.com/andersson/remoteproc:
hwspinlock: Change hwspinlock to a bool
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Change hwspinlock to a bool in case some drivers will meet dependency
issue when hwspinlock is built as a module.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Philippe Ombredanne <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The Spreadtrum hardware spinlock device can provide hardware assistance
for synchronization between the multiple subsystems.
Signed-off-by: Baolin Wang <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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So that there's no need to get into the submenu to disable all related config
entries.
Signed-off-by: Vincent Legoll <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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of_parse_phandle
of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Peter Chen <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
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radix_tree_is_indirect_ptr() is an internal API. The correct call to
use is radix_tree_deref_retry() which has the appropriate unlikely()
annotation.
Fixes: c6400ba7e13a ("drivers/hwspinlock: fix race between radix tree insertion and lookup")
Signed-off-by: Matthew Wilcox <[email protected]>
Cc: Konstantin Khlebnikov <[email protected]>
Cc: Kirill Shutemov <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Neil Brown <[email protected]>
Cc: Ross Zwisler <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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of_hwspin_lock_get_id() is protected by the RCU lock, which means that
insertions can occur simultaneously with the lookup. If the radix tree
transitions from a height of 0, we can see a slot with the indirect_ptr
bit set, which will cause us to at least read random memory, and could
cause other havoc.
Fix this by using the newly introduced radix_tree_iter_retry().
Signed-off-by: Matthew Wilcox <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ohad Ben-Cohen <[email protected]>
Cc: Konstantin Khlebnikov <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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msb of the regmap_field was mistakenly given the value 32, to set all bits
in the regmap update mask; although incorrect this worked until 921cc294,
where the mask calculation was corrected.
Signed-off-by: Bjorn Andersson <[email protected]>
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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Add hwspinlock support for the CSR atlas7 SoC.
The Hardware Spinlock device on atlas7 provides hardware assistance
for synchronization between the multiple processors in the system
(dual Cortex-A7, CAN bus Cortex-M3 and audio DSP).
Reviewed-by: Suman Anna <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Signed-off-by: Wei Chen <[email protected]>
Signed-off-by: Barry Song <[email protected]>
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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Add driver for Qualcomm Hardware Mutex block found in many Qualcomm
SoCs.
Based on initial effort by Kumar Gala <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Reviewed-by: Andy Gross <[email protected]>
Reviewed-by: Jeffrey Hugo <[email protected]>
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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HwSpinlock IP is present only on OMAP4 and other newer SoCs,
which are all device-tree boot only. This patch adds the
base support for parsing the DT nodes, and removes the code
dealing with the traditional platform device instantiation.
Signed-off-by: Suman Anna <[email protected]>
[[email protected]: ack for legacy file removal]
Acked-by: Tony Lindgren <[email protected]>
[comment on the imperfect always-zero base_id]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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This patch adds a new OF-friendly API of_hwspin_lock_get_id()
for hwspinlock clients to use/request locks from a hwspinlock
device instantiated through a device-tree blob. This new API
can be used by hwspinlock clients to get the id for a specific
lock using the phandle + args specifier, so that it can be
requested using the available hwspin_lock_request_specific()
API.
Signed-off-by: Suman Anna <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
[small comment clarification]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <[email protected]>
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HwSpinlocks are supported on TI's AM33xx, AM43xx and DRA7xx SoC
device families as well. The IPs are identical to that of
OMAP4/OMAP5, except for the number of locks.
Add a depends on to the above family of SoCs to enable the
build support for OMAP hwspinlock driver for any of the above
SoC configs.
Signed-off-by: Suman Anna <[email protected]>
[small commit log changes]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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The number of hwspinlocks are determined based on the value read
from the IP block's SYSSTATUS register. However, the module may
not be enabled and clocked, and the read may result in a bus error.
This particular issue is seen rather easily on AM33XX, since the
module wakeup is software controlled, and it is disabled out of
reset. Make sure the module is enabled and clocked before reading
the SYSSTATUS register.
Signed-off-by: Suman Anna <[email protected]>
[replace pm_runtime_put_sync with lenient pm_runtime_put]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock
Pullhwspinlock update from Ohad Ben-Cohen:
"A single patch from Vincent extending OMAP's hwspinlock support to
OMAP5"
* tag 'hwspinlock-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock:
hwspinlock/omap: support OMAP5 as well
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Even in failed case of pm_runtime_get_sync, the usage_count
is incremented. In order to keep the usage_count with correct
value and runtime power management to behave correctly, call
pm_runtime_put_noidle in such case.
In __hwspin_lock_request, module_put is also called before
return in pm_runtime_get_sync failed case.
Cc: [email protected]
Signed-off-by Liu Chuansheng <[email protected]>
Signed-off-by: Li Fei <[email protected]>
[edit commit log]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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OMAP5 has spinlocks, too.
Signed-off-by: Vincent Stehlé <[email protected]>
Cc: Tony Lindgren <[email protected]>
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <[email protected]>
Cc: Ohad Ben-Cohen <[email protected]>
Cc: Srinidhi Kasagar <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <[email protected]>
Cc: Ohad Ben-Cohen <[email protected]>
Cc: Srinidhi Kasagar <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <[email protected]>
Cc: Ohad Ben-Cohen <[email protected]>
Cc: Srinidhi Kasagar <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The dereference should be moved below the NULL test.
spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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Commit 300bab9770 (hwspinlock/core: register a bank of hwspinlocks in a
single API call, 2011-09-06) introduced 'hwspin_lock_register_single()'
to register numerous (a bank of) hwspinlock instances in a single API,
'hwspin_lock_register()'.
At which time, 'hwspin_lock_register()' accidentally passes 'local IDs'
to 'hwspin_lock_register_single()', despite that ..._single() requires
'global IDs' to register hwspinlocks.
We have to convert into global IDs by supplying the missing 'base_id'.
Cc: stable <[email protected]>
Signed-off-by: Shinya Kuribayashi <[email protected]>
[ohad: fix error path of hwspin_lock_register, too]
Signed-off-by: Ohad Ben-Cohen <[email protected]>
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