- 08 6月, 2011 1 次提交
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由 Andrew Morton 提交于
This reverts 737a3bb9 ("Driver core: move platform device creation helpers to .init.text (if MODULE=n)"). That patch assumed that platform_device_register_resndata() is only ever called from __init code but that isn't true in the case ioctl->drm_ioctl->radeon_cp_init(). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=35192 Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reported-by: NAnthony Basile <blueness@gentoo.org> Cc: Greg KH <gregkh@suse.de> Cc: David Airlie <airlied@linux.ie> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 17 5月, 2011 1 次提交
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由 Kevin Hilman 提交于
The platform_bus_set_pm_ops() operation is deprecated in favor of the new device power domain infrastructre implemented in commit 7538e3db (PM: add support for device power domains) Signed-off-by: NKevin Hilman <khilman@ti.com> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 29 4月, 2011 2 次提交
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由 Rafael J. Wysocki 提交于
Once shmobile platforms have been converted to using power domains for overriding the platform bus type's PM callbacks, it isn't necessary to use the __weakly defined wrappers around the generinc runtime PM callbacks in the platform bus type any more. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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由 Rafael J. Wysocki 提交于
Export the default PM callbacks defined for the platform bus type so that they can be used by power domains for suspending and resuming platform devices in the future. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 23 4月, 2011 4 次提交
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由 Uwe Kleine-König 提交于
Reviewed-by: NViresh Kumar <viresh.kumar@st.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
This makes the res = NULL case more consistant to the res != NULL case as now both overwrite pdev->resource. Reviewed-by: NViresh Kumar <viresh.kumar@st.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
Reviewed-by: NViresh Kumar <viresh.kumar@st.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
This makes the data = NULL case more consistent to the data != NULL case. The functional change is that now platform_device_add_data(somepdev, NULL, somesize) sets pdev->dev.platform_data to NULL instead of not touching it. Reviewed-by: NViresh Kumar <viresh.kumar@st.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 12 4月, 2011 2 次提交
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由 Samuel Ortiz 提交于
In order for MFD drivers to fetch their cell pointer but also their platform data one, an mfd cell pointer is added to the platform_device structure. That allows all MFD sub devices drivers to be MFD agnostic, unless they really need to access their MFD cell data. Most of them don't, especially the ones for IPs used by both MFD and non MFD SoCs. Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: NGreg KH <gregkh@suse.de> Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
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由 Rafael J. Wysocki 提交于
Xen save/restore is going to use hibernate device callbacks for quiescing devices and putting them back to normal operations and it would need to select CONFIG_HIBERNATION for this purpose. However, that also would cause the hibernate interfaces for user space to be enabled, which might confuse user space, because the Xen kernels don't support hibernation. Moreover, it would be wasteful, as it would make the Xen kernels include a substantial amount of code that they would never use. To address this issue introduce new power management Kconfig option CONFIG_HIBERNATE_CALLBACKS, such that it will only select the code that is necessary for the hibernate device callbacks to work and make CONFIG_HIBERNATION select it. Then, Xen save/restore will be able to select CONFIG_HIBERNATE_CALLBACKS without dragging the entire hibernate code along with it. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Tested-by: NShriram Rajagopalan <rshriram@cs.ubc.ca>
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- 23 10月, 2010 4 次提交
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由 Anton Vorontsov 提交于
There's no need to explicitly check for data and resources being NULL, as platform_device_add_{data,resources}() do this internally nowadays. This makes the code more linear and less indented. Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Anton Vorontsov 提交于
Some users of platform_device_add_{data,resources}() assume that NULL data and resources will be handled specially, i.e. just ignored. But the platform core ends up calling kmemdup(NULL, 0, ...), which returns a non-NULL result (i.e. ZERO_SIZE_PTR), which causes drivers to oops on a valid code, something like: if (platform_data) stuff = platform_data->stuff; This patch makes the platform core a bit more safe for such cases. Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Kevin Hilman 提交于
Currently, the platform_bus allows customization of several of the busses dev_pm_ops methods by using weak symbols so that platform code can override them. The weak-symbol approach is not scalable when wanting to support multiple platforms in a single kernel binary. Instead, provide __init methods for platform code to customize the dev_pm_ops methods at runtime. NOTE: after these dynamic methods are merged, the weak symbols should be removed from drivers/base/platform.c. AFAIK, this will only affect SH and sh-mobile which should be converted to use this runtime approach instead of the weak symbols. After SH & sh-mobile are converted, the weak symobols could be removed. Tested on OMAP3. Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Patrick Pannuto 提交于
In theory (although not *yet* in practice), a driver being passed to platform_driver_probe might have driver.bus set to something other than platform_bus_type. Locking drv->driver.bus is always correct. Signed-off-by: NPatrick Pannuto <ppannuto@codeaurora.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 22 10月, 2010 1 次提交
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由 Grant Likely 提交于
The current code allocates and manages platform_devices created from the device tree manually. It also uses an unsafe shortcut for allocating the platform_device and the resource table at the same time. (which I added in the last rework; sorry). This patch refactors the code to use platform_device_alloc() for allocating new devices. This reduces the amount of custom code implemented by of_platform, eliminates the unsafe alloc trick, and has the side benefit of letting the platform_bus code manage freeing the device data and resources when the device is freed. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Michal Simek <monstr@monstr.eu>
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- 06 8月, 2010 3 次提交
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由 Uwe Kleine-König 提交于
Platform devices should only be called by init code, so it should be possible to move creation helpers to .init.text -- at least if modules are disabled. Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
This makes the two similar functions platform_device_register_simple and platform_device_register_data one line inline functions using a new generic function platform_device_register_resndata. Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
This makes platform_device_add_resources look like platform_device_add_data. Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 24 7月, 2010 2 次提交
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由 Grant Likely 提交于
of_platform_bus was being used in the same manner as the platform_bus. The only difference being that of_platform_bus devices are generated from data in the device tree, and platform_bus devices are usually statically allocated in platform code. Having them separate causes the problem of device drivers having to be registered twice if it was possible for the same device to appear on either bus. This patch removes of_platform_bus_type and registers all of_platform bus devices and drivers on the platform bus instead. A previous patch made the of_device structure an alias for the platform_device structure, and a shim is used to adapt of_platform_drivers to the platform bus. After all of of_platform_bus drivers are converted to be normal platform drivers, the shim code can be removed. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NDavid S. Miller <davem@davemloft.net>
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由 Grant Likely 提交于
As part of the merge between platform bus and of_platform bus, add the ability to do of-style matching to the platform bus. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> CC: Michal Simek <monstr@monstr.eu> CC: Grant Likely <grant.likely@secretlab.ca> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: linux-kernel@vger.kernel.org CC: microblaze-uclinux@itee.uq.edu.au CC: linuxppc-dev@ozlabs.org CC: devicetree-discuss@lists.ozlabs.org
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- 22 5月, 2010 1 次提交
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由 Kevin Hilman 提交于
When runtime PM for platform_bus was added, it allowed for platforms to customize the runtime PM methods since they are defined as weak symbols. This patch allows platforms to also extend the system PM methods with custom hooks so runtime PM and system PM extensions can be managed together by custom platform-specific code. Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com> Cc: Magnus Damm <damm@opensource.se> Cc: Rafael Wysocki <rjw@sisk.pl> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 18 5月, 2010 1 次提交
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由 Geert Uytterhoeven 提交于
Make the platform resource input parameters of platform_device_add_resources() and platform_device_register_simple() const, as the resources are copied and never modified. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 13 5月, 2010 1 次提交
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由 Paul Mundt 提交于
The early dev_name() setup needs to do an allocation which can only be satisfied under slab_is_available() conditions. Some of the early platform drivers may be initialized before this point, and those still need to contend themselves with an empty dev_name. This fixes up a regression with the SH earlyprintk which was bailing out prior to hitting the early probe path due to not being able to satisfy the early allocation. Other early platform drivers (such as the early timers) that need to match the dev name are sufficiently late that allocations are already possible. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 11 5月, 2010 1 次提交
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由 Mark Brown 提交于
Currently the default runtime PM callbacks for platform devices return -ENOSYS, preventing the use of runtime PM platforms until they have provided at least a default implementation. This hinders the use of runtime PM by devices which work with many platforms such as memory mapped devices, MFDs and on chip IPs shared by multiple architectures. Change the default implementation to the standard pm_generic_runtime one, allowing drivers to use runtime PM without per-architecture changes. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 29 3月, 2010 1 次提交
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由 Paul Mundt 提交于
This is just a simple refactoring patch on top of the early dev_name() support, converting from kstrdup() to kasprintf() as suggested by Kay. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 19 3月, 2010 2 次提交
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由 Jani Nikula 提交于
A number of functions in the driver core return ERR_PTR() values on error. Document this in the kernel-doc of the functions. Signed-off-by: NJani Nikula <ext-jani.1.nikula@nokia.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Magnus Damm 提交于
This patch updates the kernel-doc notation for early platform functions. Signed-off-by: NMagnus Damm <damm@opensource.se> Acked-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 10 3月, 2010 1 次提交
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由 Paul Mundt 提交于
Presently early platform devices suffer from the fact they are unable to use dev_xxx() calls early on due to dev_name() and others being unavailable at the time ->probe() is called. This implements early init_name construction from the matched name/id pair following the semantics of the late device/driver match. As a result, matched IDs (inclusive of requested ones) are preserved when the handoff from the early platform code happens at kobject initialization time. Since we still require kmalloc slabs to be available at this point, using kstrdup() for establishing the init_name works fine. This subsequently needs to be tested from dev_name() prior to the init_name being cleared by the driver core. We don't kfree() since others will already have a handle on the string long before the kobject initialization takes place. This is also needed to permit drivers to use the clock framework early, without having to manually construct their own device IDs from the match id/name pair locally (needed by the early console and timer code on sh and arm). Signed-off-by: NPaul Mundt <lethal@linux-sh.org> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 08 3月, 2010 3 次提交
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由 Ben Hutchings 提交于
The function name must be followed by a space, hypen, space, and a short description. Signed-off-by: NBen Hutchings <ben@decadent.org.uk> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Uwe Kleine-König 提交于
This fixes a warning on several pxa based machines: arch/arm/mach-pxa/ssp.c:475: warning: initialization discards qualifiers from pointer target type Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: NVikram Dhillon <dhillonv10@gmail.com> Acked-by: NEric Miao <eric.y.miao@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Dmitry Torokhov 提交于
Many legacy-style module create singleton platform devices themselves, along with corresponding platform driver. Instead of replicating error handling code in all such drivers, provide a helper that allocates and registers a single platform device and a driver and binds them together. Signed-off-by: NDmitry Torokhov <dtor@mail.ru> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 24 12月, 2009 1 次提交
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由 Michael Hennerich 提交于
This allows MFD's to register/bind drivers for their sub devices while still being compiled as a module. Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 12 12月, 2009 1 次提交
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由 Magnus Damm 提交于
Add early_platform_init_buffer() support and update the early platform driver code to allow passing parameters to the driver on the kernel command line. early_platform_init_buffer() simply allows early platform drivers to provide a pointer and length to a memory area where the remaining part of the kernel command line option will be stored. Needed to pass baud rate and other serial port options to the reworked early serial console code on SuperH. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 31 10月, 2009 1 次提交
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由 Dmitry Torokhov 提交于
Platform drivers registered via platform_driver_probe() can be bound to devices only once, upon registration, because discard their probe() routines to save memory. Unbinding the driver through sysfs 'unbind' leaves the device stranded and confuses users so let's not create bind and unbind attributes for such drivers. Signed-off-by: NDmitry Torokhov <dtor@mail.ru> Cc: Éric Piel <eric.piel@tremplin-utc.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 16 9月, 2009 1 次提交
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由 Andrew Morton 提交于
Instead of open-coding it. Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 23 8月, 2009 1 次提交
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由 Magnus Damm 提交于
This patch adds default Runtime PM callbacks to the dev_pm_ops belonging to the platform bus. The callbacks are weak symbols that architecture specific code can override. Allows Runtime PM even though CONFIG_PM_SLEEP=n. Signed-off-by: NMagnus Damm <damm@igel.co.jp> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 11 8月, 2009 1 次提交
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由 Magnus Damm 提交于
Commit 783ea7d4 (Driver Core: Rework platform suspend/resume, print warning) added a warning message printed for platform drivers that use the legacy PM callbacks rather than struct dev_pm_ops. Unfortunately, this resulted in some confusion and made some people try to convert drivers by replacing the old callbacks with struct dev_pm_ops in automatic way, which generally is not a good idea. Remove the platform device runtime dev_pm_ops warning for now, because it's annoying to users and it's not really necessary right now. [rjw: Modified the changelog to be more informative.] Signed-off-by: NMagnus Damm <damm@igel.co.jp> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 25 7月, 2009 1 次提交
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由 Dmitry Torokhov 提交于
They are not supposed to be modified by drivers, so make them const. Signed-off-by: NDmitry Torokhov <dtor@mail.ru> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 24 7月, 2009 1 次提交
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由 Dmitry Torokhov 提交于
They are not supposed to be modified by drivers, so make them const. Signed-off-by: NDmitry Torokhov <dtor@mail.ru> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 22 7月, 2009 1 次提交
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由 Magnus Damm 提交于
This is V2 of the platform driver power management late/early callback removal patch. The callbacks ->suspend_late() and ->resume_early() are removed since all in-tree users now have been migrated to dev_pm_ops. Signed-off-by: NMagnus Damm <damm@igel.co.jp> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Acked-by: NPavel Machek <pavel@ucw.cz> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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