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path: root/drivers/acpi/pci_slot.c
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2020-09-25ACPI: PCI: Remove unused ACPICA debug codeHanjun Guo
The ACPICA debug code _COMPONENT and ACPI_MODULE_NAME() are not used, so can be removed. Signed-off-by: Hanjun Guo <guohanjun@huawei.com> [ rjw: Subject edit ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 3 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081205.739216165@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-14dmi: Mark all struct dmi_system_id instances constChristoph Hellwig
... and __initconst if applicable. Based on similar work for an older kernel in the Grsecurity patch. [JD: fix toshiba-wmi build] [JD: add htcpen] [JD: move __initconst where checkscript wants it] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2016-07-16ACPI / PCI: make pci_slot explicitly non-modularPaul Gortmaker
The Kconfig for this file is: drivers/acpi/Kconfig:config ACPI_PCI_SLOT drivers/acpi/Kconfig: bool "PCI slot detection driver" ...and so it is not built as a module. Hence including module.h and everything that comes with it just for the no-op MODULE_LICENSE and friends is rather heavy handed. The license/author info is found at the top of the file, so we just remove the MODULE_LICENSE etc and the include of module.h We delete the DRIVER_VERSION macro as well since it is unused. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-22ACPI / PCI: pci_slot: Use generic pr_debug utilityJoe Perches
Remove the dbg macro and debug module parameter and use the generic kernel facility. Trivially reduces defconfig object size on x86-64 $ size drivers/acpi/pci_slot.o* text data bss dec hex filename 880 752 4 1636 664 drivers/acpi/pci_slot.o.new 935 752 5 1692 69c drivers/acpi/pci_slot.o.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-22ACPI / PCI: pci_slot: Use more common logging styleJoe Perches
Use generic pr_<level> functions with pr_fmt for info and err. This also reduces object size a trivial bit: $ size drivers/acpi/pci_slot.o* text data bss dec hex filename 935 752 5 1692 69c drivers/acpi/pci_slot.o.new 1027 752 5 1784 6f8 drivers/acpi/pci_slot.o.old Miscellanea: o Remove unnecessary OOM message as k.alloc functions get a generic stack dump on OOM o Remove unnecessary embedded prefix from a dbg() message Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-08ACPI: Remove FSF mailing addressesJarkko Nikula
There is no need to carry potentially outdated Free Software Foundation mailing address in file headers since the COPYING file includes it. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-06ACPI / PCI: Include appropriate header file in pci_slot.cRashika
Includes appropriate header file linux/pci-acpi.h in pci_slot.c because functions acpi_pci_slot_enumerate(), acpi_pci_slot_remove() and acpi_pci_slot_init() have their prototype declaratons in linux/pci-acpi.h. This eliminates the following warnings in pci_slot.c: drivers/acpi/pci_slot.c:162:6: warning: no previous prototype for ‘acpi_pci_slot_enumerate’ [-Wmissing-prototypes] drivers/acpi/pci_slot.c:174:6: warning: no previous prototype for ‘acpi_pci_slot_remove’ [-Wmissing-prototypes] drivers/acpi/pci_slot.c:215:13: warning: no previous prototype for ‘acpi_pci_slot_init’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-23ACPI / PCI: Make bus registration and unregistration symmetricRafael J. Wysocki
Since acpi_pci_slot_enumerate() and acpiphp_enumerate_slots() can get the ACPI device handle they need from bus->bridge, it is not necessary to pass that handle to them as an argument. Drop the second argument of acpi_pci_slot_enumerate() and acpiphp_enumerate_slots(), rework them to obtain the ACPI handle from bus->bridge and make acpi_pci_add_bus() and acpi_pci_remove_bus() entirely symmetrical. Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
2013-04-12PCI/ACPI: Handle PCI slot devices when creating/destroying PCI busesJiang Liu
Currently the pci_slot driver doesn't update PCI slot devices when PCI device hotplug event happens, which may cause memory leak and returning stale information to user. Now the pci_slot driver has been changed as built-in driver, so invoke PCI slot enumeration and destroy routines directly from the PCI core. And remove ACPI PCI sub-driver related code because it isn't needed any more. [bhelgas: removed "extern" from function declarations] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com>
2013-02-25Merge tag 'pci-v3.9-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI changes from Bjorn Helgaas: "Host bridge hotplug - Major overhaul of ACPI host bridge add/start (Rafael Wysocki, Yinghai Lu) - Major overhaul of PCI/ACPI binding (Rafael Wysocki, Yinghai Lu) - Split out ACPI host bridge and ACPI PCI device hotplug (Yinghai Lu) - Stop caching _PRT and make independent of bus numbers (Yinghai Lu) PCI device hotplug - Clean up cpqphp dead code (Sasha Levin) - Disable ARI unless device and upstream bridge support it (Yijing Wang) - Initialize all hot-added devices (not functions 0-7) (Yijing Wang) Power management - Don't touch ASPM if disabled (Joe Lawrence) - Fix ASPM link state management (Myron Stowe) Miscellaneous - Fix PCI_EXP_FLAGS accessor (Alex Williamson) - Disable Bus Master in pci_device_shutdown (Konstantin Khlebnikov) - Document hotplug resource and MPS parameters (Yijing Wang) - Add accessor for PCIe capabilities (Myron Stowe) - Drop pciehp suspend/resume messages (Paul Bolle) - Make pci_slot built-in only (not a module) (Jiang Liu) - Remove unused PCI/ACPI bind ops (Jiang Liu) - Removed used pci_root_bus (Bjorn Helgaas)" * tag 'pci-v3.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (51 commits) PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers PCI: Fix PCI Express Capability accessors for PCI_EXP_FLAGS ACPI / PCI: Make pci_slot built-in only, not a module PCI/PM: Clear state_saved during suspend PCI: Use atomic_inc_return() rather than atomic_add_return() PCI: Catch attempts to disable already-disabled devices PCI: Disable Bus Master unconditionally in pci_device_shutdown() PCI: acpiphp: Remove dead code for PCI host bridge hotplug PCI: acpiphp: Create companion ACPI devices before creating PCI devices PCI: Remove unused "rc" in virtfn_add_bus() PCI: pciehp: Drop suspend/resume ENTRY messages PCI/ASPM: Don't touch ASPM if forcibly disabled PCI/ASPM: Deallocate upstream link state even if device is not PCIe PCI: Document MPS parameters pci=pcie_bus_safe, pci=pcie_bus_perf, etc PCI: Document hpiosize= and hpmemsize= resource reservation parameters PCI: Use PCI Express Capability accessor PCI: Introduce accessor to retrieve PCIe Capabilities Register PCI: Put pci_dev in device tree as early as possible PCI: Skip attaching driver in device_add() PCI: acpiphp: Keep driver loaded even if no slots found ...
2013-02-15ACPI / PCI: Make pci_slot built-in only, not a moduleJiang Liu
As discussed in thread at https://patchwork.kernel.org/patch/1946851/, there's no value in supporting CONFIG_ACPI_PCI_SLOT=m any more. So change Kconfig and code to only support building pci_slot as built-in driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-02-13ACPI / PCI: pci_slot: replace printk(KERN_xxx) with pr_xxx()Jiang Liu
Trivial changes to replace printk(KERN_xxx) with pr_xxx(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-09-24PCI/ACPI: Use acpi_pci_root info rather than looking it up againTaku Izumi
This patch changes the function signature of walk_root_bridge(). We can omit _STA, _SEG, and _BBN evaluation by passing not acpi_handle but acpi_pci_root. Now that acpi_pci_slot_add() which is the only caller of walk_root_bridge() gets acpi_pci_root structure, changing signature of walk_root_bridge() is reasonable. [bhelgaas: changelog] Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-09-24PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interfaceTaku Izumi
This patch changes .add/.remove interfaces of acpi_pci_driver. In the current implementation acpi_handle is passed as a parameter of .add/.remove interface. However, the acpi_pci_root structure contains more useful information than just the acpi_handle. This enables us to avoid some useless lookups in each acpi_pci_driver. Note: This changes interfaces used by acpi_pci_register_driver(), an exported symbol. This patch updates all the in-kernel users, but any out-of-kernel acpi_pci_register_driver() users will need updates. [bhelgaas: changelog] Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-01-13module_param: make bool parameters really bool (drivers & misc)Rusty Russell
module_param(bool) used to counter-intuitively take an int. In fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy trick. It's time to remove the int/unsigned int option. For this version it'll simply give a warning, but it'll break next kernel version. Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-11-24ACPICA: Add post-order callback to acpi_walk_namespaceLin Ming
The existing interface only has a pre-order callback. This change adds an additional parameter for a post-order callback which will be more useful for bus scans. ACPICA BZ 779. Also update the external calls to acpi_walk_namespace. http://www.acpica.org/bugzilla/show_bug.cgi?id=779 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-19Merge branch 'misc-2.6.32' into releaseLen Brown
Conflicts: drivers/pci/dmar.c Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-19ACPI: linux/acpi.h should not include linux/dmi.hLen Brown
users of acpi.h that need dmi.h should include it directly. Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-31ACPI: pci_slot.ko wants a 64-bit _SUNAlex Chiang
Similar to commit b6adc195 (PCI hotplug: acpiphp wants a 64-bit _SUN), pci_slot.ko reads and creates sysfs directories based on the _SUN method. Certain HP platforms return 64 bits in _SUN. This change to pci_slot.ko allows us to see the correct sysfs directories. Reported-by: Chad Smith <chad.smith@hp.com> Cc: stable@kernel.org Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-06PCI: pci_slot: grab refcount on slot's busAlex Chiang
If a logical hot unplug (remove) is performed on a physical PCI slot's parent bridge, and then pci_slot is unloaded, we will encounter an oops: [<ffffffff803a788a>] kobject_release+0x9a/0x290 [<ffffffff803a77f0>] ? kobject_release+0x0/0x290 [<ffffffff803a8ce7>] kref_put+0x37/0x80 [<ffffffff803a76f7>] kobject_put+0x27/0x60 [<ffffffff803bebcc>] ? pci_destroy_slot+0x3c/0xc0 [<ffffffff803bebd5>] pci_destroy_slot+0x45/0xc0 [<ffffffffa000f05c>] acpi_pci_slot_remove+0x5c/0x91 [pci_slot] [<ffffffff8040064b>] acpi_pci_unregister_driver+0x4b/0x62 [<ffffffffa000f5c8>] acpi_pci_slot_exit+0x10/0x12 [pci_slot] [<ffffffff80276ce1>] sys_delete_module+0x161/0x250 We need to grab a reference to the parent PCI bus, which will pin the bus and prevent it from being released until pci_slot is unloaded. Cc: lenb@kernel.org Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reported-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-23Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (123 commits) dock: make dock driver not a module ACPI: fix ia64 build warning ACPI: hack around sysfs warning with link order ACPI suspend: fix build warning when CONFIG_ACPI_SLEEP=n intel_menlo: fix build warning panasonic-laptop: fix build ACPICA: Update version to 20080926 ACPICA: Add support for zero-length buffer-to-string conversions ACPICA: New: Validation for predefined ACPI methods/objects ACPICA: Fix for implicit return compatibility ACPICA: Fixed a couple memory leaks associated with "implicit return" ACPICA: Optimize buffer allocation procedure ACPICA: Fix possible memory leak, error exit path ACPICA: Fix fault after mem allocation failure in AML parser ACPICA: Remove unused ACPI register bit definition ACPICA: Update version to 20080829 ACPICA: Fix possible memory leak in acpi_ns_get_external_pathname ACPICA: Cleanup for internal Reference Object ACPICA: Update comments - no functional changes ACPICA: Update for Reference ACPI_OPERAND_OBJECT ...
2008-10-22PCI: update pci_create_slot() to take a 'hotplug' paramAlex Chiang
Slot detection drivers can co-exist with hotplug drivers. The names of the detected/claimed slots may be different depending on module load order. For legacy reasons, we need to allow hotplug drivers to override the slot name if a detection driver is loaded first (and they find the same slots). Creating and overriding slot names should be an atomic operation, otherwise you get a locking nightmare as various drivers race to call pci_create_slot(). pci_create_slot() is already serialized by grabbing the pci_bus_sem. We update the API and add a 'hotplug' param, which is: set if the caller is a hotplug driver NULL if the caller is a detection driver pci_create_slot() does not actually use the 'hotplug' parameter in this patch. A later patch will add the logic that uses it. Cc: kristen.c.accardi@intel.com Cc: matthew@wil.cx Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-11ACPI: Change acpi_evaluate_integer to support 64-bit on 32-bit kernelsMatthew Wilcox
As of version 2.0, ACPI can return 64-bit integers. The current acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms. Change the argument to take a pointer to an acpi_integer so we support 64-bit integers on all platforms. lenb: replaced use of "acpi_integer" with "unsigned long long" lenb: fixed bug in acpi_thermal_trips_update() Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-28PCI: fix bogus "'device' may be used uninitialized" warning in pci_slotMatthew Wilcox
I get warnings about 'device' possibly being used uninitialised. While I can deduce this is not true, it seems that GCC can't. This patch changes `check_slot' to return device on success and -1 on error, which shuts GCC up. Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22PCI hotplug: fix error path in pci_slot's register_slotAlex Chiang
Juha Leppnen noticed that an error path in register_slot() wasn't returning appropriately, leading to a condition where we might access a kfree'ed pointer, so let's fix that. Additionally, fix up the copyright information in the file while we're in there. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: ACPI PCI slot detection driverAlex Chiang
Detect all physical PCI slots as described by ACPI, and create entries in /sys/bus/pci/slots/. Not all physical slots are hotpluggable, and the acpiphp module does not detect them. Now we know the physical PCI geography of our system, without caring about hotplug. [kaneshige.kenji@jp.fujitsu.com: export-kobject_rename-for-pci_hotplug_core] Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Greg KH <greg@kroah.com> [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix build with CONFIG_DMI=n] Signed-off-by: Alex Chiang <achiang@hp.com> Cc: Greg KH <greg@kroah.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Len Brown <lenb@kernel.org> Acked-by: Len Brown <len.brown@intel.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>