linux/drivers/base
Zhang Rui 8c4ff6d009 ACPI: fix module autoloading for ACPI enumerated devices
ACPI enumerated devices has ACPI style _HID and _CID strings,
all of these strings can be used for both driver loading and matching.

Currently, in Platform, I2C and SPI bus, the ACPI style driver matching
is supported by invoking acpi_driver_match_device() in bus .match() callback.
But, the module autoloading is still broken.

For example, there is any ACPI device with _HID "INTABCD" that is
enumerated to platform bus, and we have a driver that can probe it.

The driver exports its module_alias as "acpi:INTABCD" use the following code
static const struct acpi_device_id xxx_acpi_match[] = {
        { "INTABCD", 0 },
        { }
};
MODULE_DEVICE_TABLE(acpi, xxx_acpi_match);

But, unfortunately, the device' modalias is shown as "platform:INTABCD:00",
please refer to modalias_show() and platform_uevent() in
drivers/base/platform.c.
This results in that the driver will not be loaded automatically when the
device node is created, because their modalias do not match.

This also applies to I2C and SPI bus.

With this patch, the device' modalias will be shown as "acpi:INTABCD" as well.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-16 23:13:10 +01:00
..
power More ACPI and power management updates for 3.13-rc1 2013-11-20 13:25:04 -08:00
regmap Merge remote-tracking branches 'regmap/fix/doc' and 'regmap/fix/mmio' into regmap-linus 2013-11-26 13:16:56 +00:00
attribute_container.c drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
base.h driver core: bus_type: add drv_groups 2013-08-12 15:33:31 -07:00
bus.c driver-core: remove struct bus_type.drv_attrs 2013-09-28 10:18:20 -07:00
class.c sysfs: make attr namespace interface less convoluted 2013-09-26 14:50:01 -07:00
core.c drivers/base/core.c: output device renaming messages with dev_dbg(). 2013-10-16 18:33:27 -07:00
cpu.c hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock() 2013-09-30 19:55:51 +02:00
dd.c PM / runtime: Use pm_runtime_put_sync() in __device_release_driver() 2013-11-07 19:13:49 +01:00
devres.c devres: restore zeroing behavior of devres_alloc() 2013-10-25 05:46:27 +01:00
devtmpfs.c locks: break delegations on any attribute modification 2013-11-09 00:16:44 -05:00
dma-buf.c dma-buf: Expose buffer size to userspace (v2) 2013-09-10 11:36:45 +05:30
dma-coherent.c drivers: dma-coherent: Fix typo in dma_mmap_from_coherent documentation 2012-10-23 14:05:32 +02:00
dma-contiguous.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
dma-mapping.c [media] dma-mapping: fix dma_common_get_sgtable() conditional compilation 2012-11-27 09:42:31 -02:00
driver.c driver core: add #include <linux/sysfs.h> to core files. 2013-08-27 10:24:15 -07:00
firmware_class.c firmware: Be a bit more verbose about direct firmware loading failure 2013-09-26 15:35:30 -07:00
firmware.c
hypervisor.c drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required. 2011-10-31 19:31:38 -04:00
init.c driver-core: implement 'sysdev' functionality for regular devices and buses 2011-12-14 14:29:38 -08:00
isa.c
Kconfig Merge remote-tracking branch 'dma-public/for-v3.12-cma-dma' into for-next 2013-07-15 11:13:54 +02:00
Makefile Merge remote-tracking branch 'origin/next' into kvm-ppc-next 2013-08-29 00:41:59 +02:00
map.c
memory.c driver core: Release device_hotplug_lock when store_mem_state returns EINVAL 2013-10-16 18:42:41 -07:00
module.c driver core: module.c: Use kasprintf 2010-05-21 09:37:29 -07:00
node.c thp: account anon transparent huge pages into NR_ANON_PAGES 2013-09-12 15:38:03 -07:00
pinctrl.c drivers: pinctrl sleep and idle states in the core 2013-06-16 11:56:52 +02:00
platform.c ACPI: fix module autoloading for ACPI enumerated devices 2014-01-16 23:13:10 +01:00
reservation.c reservation: cross-device reservation support, v4 2013-06-28 12:02:15 +10:00
soc.c mode_t whack-a-mole: ->is_visible() returns umode_t... 2012-05-29 23:28:42 -04:00
syscore.c PM: Reintroduce dropped call to check_wakeup_irqs 2011-07-11 10:51:49 +02:00
topology.c cpu topology: remove stale arch_provides_topology_pointers and define_siblings_show_map/list() 2013-07-29 13:12:45 -07:00
transport_class.c drivers/base: transport_class explicitly requires EXPORT_SYMBOL 2011-10-31 19:31:15 -04:00