09 May, 2009
3 commits
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This reverts commit 006f4571a15fae3a0575f2a0f9e9b63b3d1012f8:
This patch moves platform_data from struct device into
struct platform_device, based on the two ideas:1. Now all platform_driver is registered by platform_driver_register,
which makes probe()/release()/... of platform_driver passed parameter
of platform_device *, so platform driver can get platform_data from
platform_device;2. Other kind of devices do not need to use platform_data, we can
decrease size of device if moving it to platform_device.Taking into consideration of thousands of files to be fixed and they
can't be finished in one night(maybe it will take a long time), so we
keep platform_data in device to allow two kind of cases coexist until
all platform devices pass its platfrom data from
platform_device->platform_data.All patches to do this kind of conversion are welcome.
As we don't really want to do it, it was a bad idea.
Cc: David Brownell
Cc: Ming Lei
Signed-off-by: Greg Kroah-Hartman -
This reverts commit ce21c7bcd796fc4f45d48781b7e85f493cc55ee5:
We will remove platform_data field from struct device until
all platform devices pass its specific data from platfom_device
and all platform drivers use platform specific data passed by
platform_device->platform_data. This kind of conversion will
need a long time, for thousands of files is affected.To make the conversion easily, we allow platform specific data
passed by struct device or struct platform_device and platform
driver may use it from struct device or struct platform_device.As we really don't want to do this at all.
Cc: David Brownell
Cc: Ming Lei
Signed-off-by: Greg Kroah-Hartman -
Fix function parameter notation in platform.c;
fixes kernel-doc warnings.Signed-off-by: Randy Dunlap
Signed-off-by: Greg Kroah-Hartman
07 May, 2009
1 commit
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Fix zillions of -mm x86_64 allmodconfig build errors - the file uses
EXPORT_SYMBOL() and kmalloc but misses the needed includes.Cc: Greg Kroah-Hartman
Cc: Joerg Roedel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Apr, 2009
1 commit
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There is currently only one way for userspace to say "wait for my storage
device to get ready for the modules I just loaded": to load the
scsi_wait_scan module. Expectations of userspace are that once this
module is loaded, all the (storage) devices for which the drivers
were loaded before the module load are present.Now, there are some issues with the implementation, and the async
stuff got caught in the middle of this: The existing code only
waits for the scsy async probing to finish, but it did not take
into account at all that probing might not have begun yet.
(Russell ran into this problem on his computer and the fix works for him)This patch fixes this more thoroughly than the previous "fix", which
had some bad side effects (namely, for kernel code that wanted to wait for
the scsi scan it would also do an async sync, which would deadlock if you did
it from async context already.. there's a report about that on lkml):
The patch makes the module first wait for all device driver probes, and then it
will wait for the scsi parallel scan to finish.Signed-off-by: Arjan van de Ven
Tested-by: Russell King
Signed-off-by: Linus Torvalds
20 Apr, 2009
1 commit
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notice one system /proc/iomem some entries missed the name for pci_devices
it turns that dev->dev.kobj name is changed after device_add.
for pci code: via acpi_pci_root_driver.ops.add (aka acpi_pci_root_add)
==> pci_acpi_scan_root is used to scan pci bus/device, and at the same
time we read the resource for pci_dev in the pci_read_bases, we have
res->name = pci_name(pci_dev); pci_name is calling dev_name.later via acpi_pci_root_driver.ops.start (aka acpi_pci_root_start) ==>
pci_bus_add_device to add all pci_dev in kobj tree. pci_bus_add_device
will call device_add.actually in device_add
/* first, register with generic layer. */
error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev_name(dev));
if (error)
goto Error;will get one new name for that kobj, old name is freed.
[Impact: fix corrupted names in /proc/iomem ]
Signed-off-by: Yinghai Lu
Signed-off-by: Linus Torvalds
17 Apr, 2009
3 commits
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David Vrabel noticed that the wireless usb stack likes to call
device_for_each_chile() with an empty bus. This used to work fine, but
now oopses. This patch fixes the oops and makes the code behave like it
used to.Reported-by: David Vrabel
Tested-by: David Vrabel
Signed-off-by: Greg Kroah-Hartman -
V3 of the early platform driver implementation.
Platform drivers are great for embedded platforms because we can separate
driver configuration from the actual driver. So base addresses,
interrupts and other configuration can be kept with the processor or board
code, and the platform driver can be reused by many different platforms.For early devices we have nothing today. For instance, to configure early
timers and early serial ports we cannot use platform devices. This
because the setup order during boot. Timers are needed before the
platform driver core code is available. The same goes for early printk
support. Early in this case means before initcalls.These early drivers today have their configuration either hard coded or
they receive it using some special configuration method. This is working
quite well, but if we want to support both regular kernel modules and
early devices then we need to have two ways of configuring the same
driver. A single way would be better.The early platform driver patch is basically a set of functions that allow
drivers to register themselves and architecture code to locate them and
probe. Registration happens through early_param(). The time for the
probe is decided by the architecture code.See Documentation/driver-model/platform.txt for more details.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Magnus Damm
Cc: Paul Mundt
Cc: Kay Sievers
Cc: David Brownell
Cc: Tejun Heo
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
This patch fixes a bug introduced in commit
49b420a13ff95b449947181190b08367348e3e1b.If a instance of bus_type doesn't have .match method,
all .probe of drivers in the bus should be called, or else
the .probe have not a chance to be called.Signed-off-by: Ming Lei
Reported-by: Guennadi Liakhovetski
Signed-off-by: Greg Kroah-Hartman
07 Apr, 2009
1 commit
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Replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)
Signed-off-by: Yang Hongyang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Apr, 2009
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits)
cpumask: remove cpumask allocation from idle_balance, fix
numa, cpumask: move numa_node_id default implementation to topology.h, fix
cpumask: remove cpumask allocation from idle_balance
x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus
x86: cpumask: update 32-bit APM not to mug current->cpus_allowed
x86: microcode: cleanup
x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c
cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash
numa, cpumask: move numa_node_id default implementation to topology.h
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
cpumask: remove x86 cpumask_t uses.
cpumask: use cpumask_var_t in uv_flush_tlb_others.
cpumask: remove cpumask_t assignment from vector_allocation_domain()
cpumask: make Xen use the new operators.
cpumask: clean up summit's send_IPI functions
cpumask: use new cpumask functions throughout x86
x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask
cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
x86: unify 32 and 64-bit node_to_cpumask_map
...
04 Apr, 2009
2 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
trivial: Update my email address
trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
trivial: Fix misspelling of "Celsius".
trivial: remove unused variable 'path' in alloc_file()
trivial: fix a pdlfush -> pdflush typo in comment
trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
trivial: wusb: Storage class should be before const qualifier
trivial: drivers/char/bsr.c: Storage class should be before const qualifier
trivial: h8300: Storage class should be before const qualifier
trivial: fix where cgroup documentation is not correctly referred to
trivial: Give the right path in Documentation example
trivial: MTD: remove EOL from MODULE_DESCRIPTION
trivial: Fix typo in bio_split()'s documentation
trivial: PWM: fix of #endif comment
trivial: fix typos/grammar errors in Kconfig texts
trivial: Fix misspelling of firmware
trivial: cgroups: documentation typo and spelling corrections
trivial: Update contact info for Jochen Hein
trivial: fix typo "resgister" -> "register"
... -
* git://git.infradead.org/iommu-2.6:
intel-iommu: Fix address wrap on 32-bit kernel.
intel-iommu: Enable DMAR on 32-bit kernel.
intel-iommu: fix PCI device detach from virtual machine
intel-iommu: VT-d page table to support snooping control bit
iommu: Add domain_has_cap iommu_ops
intel-iommu: Snooping control supportFixed trivial conflicts in arch/x86/Kconfig and drivers/pci/intel-iommu.c
31 Mar, 2009
5 commits
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Conflicts:
arch/x86/include/asm/topology.h
drivers/oprofile/buffer_sync.c
(Both cases: changed in Linus' tree, removed in Ingo's). -
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask:
oprofile: Thou shalt not call __exit functions from __init functions
cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic
cpumask: remove cpumask_t from core
cpumask: convert rcutorture.c
cpumask: use new cpumask_ functions in core code.
cpumask: remove references to struct irqaction's mask field.
cpumask: use mm_cpumask() wrapper: kernel/fork.c
cpumask: use set_cpu_active in init/main.c
cpumask: remove node_to_first_cpu
cpumask: fix seq_bitmap_*() functions.
cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed
radeonfb: Use __pci_complete_power_transition()
PCI PM: Introduce __pci_[start|complete]_power_transition() (rev. 2)
PCI PM: Restore config spaces of all devices during early resume
PCI PM: Make pci_set_power_state() handle devices with no PM support
PCI PM: Put devices into low power states during late suspend (rev. 2)
PCI PM: Move pci_restore_standard_config to pci-driver.c
PCI PM: Use pci_set_power_state during early resume
PCI PM: Consistently use variable name "error" for pm call return values
kexec: Change kexec jump code ordering
PM: Change hibernation code ordering
PM: Change suspend code ordering
PM: Rework handling of interrupts during suspend-resume
PM: Introduce functions for suspending and resuming device interrupts -
Conflicts:
arch/x86/kernel/cpu/common.c -
Use the functions introduced in by the previous patch,
suspend_device_irqs(), resume_device_irqs() and check_wakeup_irqs(),
to rework the handling of interrupts during suspend (hibernation) and
resume. Namely, interrupts will only be disabled on the CPU right
before suspending sysdevs, while device drivers will be prevented
from receiving interrupts, with the help of the new helper function,
before their "late" suspend callbacks run (and analogously during
resume).In addition, since the device interrups are now disabled before the
CPU has turned all interrupts off and the CPU will ACK the interrupts
setting the IRQ_PENDING bit for them, check in sysdev_suspend() if
any wake-up interrupts are pending and abort suspend if that's the
case.Signed-off-by: Rafael J. Wysocki
Acked-by: Ingo Molnar
30 Mar, 2009
2 commits
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Signed-off-by: Uwe Kleine-Koenig
Signed-off-by: Jiri Kosina -
Impact: cleanup
Time to clean up remaining laggards using the old cpu_ functions.
Signed-off-by: Rusty Russell
Cc: Greg Kroah-Hartman
Cc: Ingo Molnar
Cc: Trond.Myklebust@netapp.com
29 Mar, 2009
1 commit
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Conflicts:
arch/x86/Kconfig
28 Mar, 2009
1 commit
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Conflicts:
arch/parisc/kernel/irq.c
arch/x86/include/asm/fixmap_64.h
arch/x86/include/asm/setup.h
kernel/irq/handle.cSemantic merge:
arch/x86/include/asm/fixmap.hSigned-off-by: Ingo Molnar
25 Mar, 2009
15 commits
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dpm_list currently relies on the fact that child devices will
be registered after their parents to get a correct suspend
order. Using device_move() however destroys this assumption, as
an already registered device may be moved under a newly registered
one.This patch adds a new argument to device_move(), allowing callers
to specify how dpm_list should be adapted.Signed-off-by: Cornelia Huck
Acked-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman -
do some cleanup on drivers/base/sys.c
Signed-off-by: Zhenwen Xu
Signed-off-by: Greg Kroah-Hartman -
This patch implements uevent suppress in kobject and removes it
from struct device, based on the following ideas:1,Uevent sending should be one attribute of kobject, so suppressing it
in kobject layer is more natural than in device layer. By this way,
we can do it for other objects embedded with kobject.2,It may save several bytes for each instance of struct device.(On my
omap3(32bit ARM) based box, can save 8bytes per device object)This patch also introduces dev_set|get_uevent_suppress() helpers to
set and query uevent_suppress attribute in case to help kobject
as private part of struct device in future.[This version is against the latest driver-core patch set of Greg,please
ignore the last version.]Signed-off-by: Ming Lei
Signed-off-by: Greg Kroah-Hartman -
We will remove platform_data field from struct device until
all platform devices pass its specific data from platfom_device
and all platform drivers use platform specific data passed by
platform_device->platform_data. This kind of conversion will
need a long time, for thousands of files is affected.To make the conversion easily, we allow platform specific data
passed by struct device or struct platform_device and platform
driver may use it from struct device or struct platform_device.Signed-off-by: Ming Lei
Signed-off-by: Greg Kroah-Hartman -
This patch moves platform_data from struct device into
struct platform_device, based on the two ideas:1. Now all platform_driver is registered by platform_driver_register,
which makes probe()/release()/... of platform_driver passed parameter
of platform_device *, so platform driver can get platform_data from
platform_device;2. Other kind of devices do not need to use platform_data, we can
decrease size of device if moving it to platform_device.Taking into consideration of thousands of files to be fixed and they
can't be finished in one night(maybe it will take a long time), so we
keep platform_data in device to allow two kind of cases coexist until
all platform devices pass its platfrom data from
platform_device->platform_data.All patches to do this kind of conversion are welcome.
Signed-off-by: Ming Lei
Signed-off-by: Greg Kroah-Hartman -
Nothing outside of the driver core should ever touch knode_bus, so
move it out of the public eye.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
Nothing outside of the driver core should ever touch knode_driver, so
move it out of the public eye.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
Nothing outside of the driver core should ever touch klist_children, or
knode_parent, so move them out of the public eye.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
This is to be used to move things out of struct device that no code
outside of the driver core should ever touch.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
This patch removes 100ms polling for driver_probe_done in
wait_for_device_probe(), and uses wait_event() instead.
Removing polling in fs initialization may lead to
a faster boot.This patch also changes the return type of wait_for_device_done()
from int to void.This patch is against Arjan's patch in linux-next tree.
Signed-off-by: Ming Lei
Acked-by: Cornelia Huck
Reviewed-by: Arjan van de Ven
Signed-off-by: Greg Kroah-Hartman -
If the bus_type is not registerd, driver_register to that bus will cause oops.
I found this bug when test built-in usb serial drivers (ie. aircable driver)
with 'nousb' cmdline params.In this patch:
1. set the bus->p=NULL when bus_register failed and unregisterd.
2. if bus->p is NULL, driver_register BUG_ON will be triggered.Signed-off-by: Dave Young
Signed-off-by: Greg Kroah-Hartman -
Now platform_device is being widely used on SoC processors where the
peripherals are attached to the system bus, which is simple enough.However, silicon IPs for these SoCs are usually shared heavily across
a family of processors, even products from different companies. This
makes the original simple driver name based matching insufficient, or
simply not straight-forward.Introduce a module id table for platform devices, and makes it clear
that a platform driver is able to support some shared IP and handle
slight differences across different platforms (by 'driver_data').
Module alias is handled automatically when a MODULE_DEVICE_TABLE()
is defined.To not disturb the current platform drivers too much, the matched id
entry is recorded and can be retrieved by platform_get_device_id().Signed-off-by: Eric Miao
Cc: Kay Sievers
Cc: Ben Dooks
Signed-off-by: Greg Kroah-Hartman -
This helps the code look more consistent and cleaner.
Signed-off-by: Eric Miao
Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
This patch moves bus->match out from driver_probe_device and
does not hold device lock to check the match between a device
and a driver.The idea has been verified by the commit 6cd495860901,
which leads to a faster boot. But the commit 6cd495860901 has
the following drawbacks: 1),only does the quick check in
the path of __driver_attach->driver_probe_device, not in other
paths; 2),for a matched device and driver, check the same match
twice. It is a waste of cpu ,especially for some drivers with long
device id table (eg. usb-storage driver).This patch adds a helper of driver_match_device to check the match
in all paths, and testes the match only once.Signed-off-by: Ming Lei
Acked-by: Cornelia Huck
Signed-off-by: Greg Kroah-Hartman -
Now that all users of bus_id is gone, we can remove it from struct
device.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
24 Mar, 2009
1 commit
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This iommu_op can tell if domain have a specific capability, like snooping
control for Intel IOMMU, which can be used by other components of kernel to
adjust the behaviour.Signed-off-by: Sheng Yang
Signed-off-by: David Woodhouse
18 Mar, 2009
1 commit
13 Mar, 2009
1 commit
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Impact: cleanup
node_to_cpumask (and the blecherous node_to_cpumask_ptr which
contained a declaration) are replaced now everyone implements
cpumask_of_node.Signed-off-by: Rusty Russell