* [PATCH] ACPI: Add _UID support for ACPI devices.
@ 2012-09-27 1:17 Lv Zheng
2012-09-27 1:33 ` Zhang Rui
` (3 more replies)
0 siblings, 4 replies; 9+ messages in thread
From: Lv Zheng @ 2012-09-27 1:17 UTC (permalink / raw)
To: Linux ACPI; +Cc: Len Brown, Robert Moore, Ying Huang, Rui Zhang, Lv Zheng
The _UID object is optional, but is required when the device has no
other way to report a persistent unique device ID.
This patch is required for ACPI 5.0 ACPI enumerated IP cores.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
---
drivers/acpi/scan.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index d730a93..bb7fe47 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -327,6 +327,8 @@ static void acpi_device_release(struct device *dev)
struct acpi_device *acpi_dev = to_acpi_device(dev);
acpi_free_ids(acpi_dev);
+ if (acpi_dev->pnp.unique_id)
+ kfree(acpi_dev->pnp.unique_id);
kfree(acpi_dev);
}
@@ -1162,6 +1164,9 @@ static void acpi_device_set_id(struct acpi_device *device)
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
}
+ if (info->valid & ACPI_VALID_UID) {
+ device->pnp.unique_id = kstrdup(info->unique_id.string, GFP_KERNEL);
+ }
kfree(info);
--
1.7.10
^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [PATCH] ACPI: Add _UID support for ACPI devices. 2012-09-27 1:17 [PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng @ 2012-09-27 1:33 ` Zhang Rui 2012-09-27 1:40 ` [PATCH] ACPI: Add identification objects' user interface Lv Zheng ` (2 subsequent siblings) 3 siblings, 0 replies; 9+ messages in thread From: Zhang Rui @ 2012-09-27 1:33 UTC (permalink / raw) To: Lv Zheng; +Cc: Linux ACPI, Len Brown, Robert Moore, Ying Huang On 四, 2012-09-27 at 09:17 +0800, Lv Zheng wrote: > The _UID object is optional, but is required when the device has no > other way to report a persistent unique device ID. > This patch is required for ACPI 5.0 ACPI enumerated IP cores. > > Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> > --- > drivers/acpi/scan.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index d730a93..bb7fe47 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -327,6 +327,8 @@ static void acpi_device_release(struct device *dev) > struct acpi_device *acpi_dev = to_acpi_device(dev); > > acpi_free_ids(acpi_dev); > + if (acpi_dev->pnp.unique_id) > + kfree(acpi_dev->pnp.unique_id); > kfree(acpi_dev); > } > > @@ -1162,6 +1164,9 @@ static void acpi_device_set_id(struct acpi_device *device) > device->pnp.bus_address = info->address; > device->flags.bus_address = 1; > } > + if (info->valid & ACPI_VALID_UID) { > + device->pnp.unique_id = kstrdup(info->unique_id.string, GFP_KERNEL); > + } > > kfree(info); > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH] ACPI: Add identification objects' user interface. 2012-09-27 1:17 [PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-27 1:33 ` Zhang Rui @ 2012-09-27 1:40 ` Lv Zheng 2012-09-27 1:45 ` Zhang Rui 2012-09-27 5:02 ` [RESEND PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-28 0:39 ` [PATCH v2 0/2] ACPI: Add userland visibility for identification objects Lv Zheng 3 siblings, 1 reply; 9+ messages in thread From: Lv Zheng @ 2012-09-27 1:40 UTC (permalink / raw) To: Linux ACPI; +Cc: Len Brown, Robert Moore, Ying Huang, Rui Zhang, Lv Zheng ACPI devices are glued with physical devices through _ADR object, ACPI enumerated devices are identified with _UID object. Currently we can observe _HID/_CID through sysfs interfaces (hid/modalias), but there's no mean for us to check _ADR/_UID from user space. This patch fix this gap for ACPI developers and users. Signed-off-by: Lv Zheng <lv.zheng@intel.com> --- drivers/acpi/scan.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index bb7fe47..df53190 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -216,6 +216,22 @@ acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *bu static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); static ssize_t +acpi_device_uid_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); +} +static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); + +static ssize_t +acpi_device_adr_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "0x%08x\n", (unsigned int)(acpi_dev->pnp.bus_address)); +} +static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); + +static ssize_t acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_device *acpi_dev = to_acpi_device(dev); struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; @@ -257,6 +273,11 @@ static int acpi_device_setup_files(struct acpi_device *dev) goto end; } + if (dev->flags.bus_address) + result = device_create_file(&dev->dev, &dev_attr_adr); + if (dev->pnp.unique_id) + result = device_create_file(&dev->dev, &dev_attr_uid); + /* * If device has _EJ0, 'eject' file is created that is used to trigger * hot-removal function from userland. @@ -281,6 +302,10 @@ static void acpi_device_remove_files(struct acpi_device *dev) if (ACPI_SUCCESS(status)) device_remove_file(&dev->dev, &dev_attr_eject); + if (dev->pnp.unique_id) + device_remove_file(&dev->dev, &dev_attr_uid); + if (dev->flags.bus_address) + device_remove_file(&dev->dev, &dev_attr_adr); device_remove_file(&dev->dev, &dev_attr_modalias); device_remove_file(&dev->dev, &dev_attr_hid); if (dev->handle) -- 1.7.10 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH] ACPI: Add identification objects' user interface. 2012-09-27 1:40 ` [PATCH] ACPI: Add identification objects' user interface Lv Zheng @ 2012-09-27 1:45 ` Zhang Rui 2012-09-27 5:05 ` Zheng, Lv 0 siblings, 1 reply; 9+ messages in thread From: Zhang Rui @ 2012-09-27 1:45 UTC (permalink / raw) To: Lv Zheng; +Cc: Linux ACPI, Len Brown, Robert Moore, Ying Huang On 四, 2012-09-27 at 09:40 +0800, Lv Zheng wrote: > ACPI devices are glued with physical devices through _ADR object, ACPI > enumerated devices are identified with _UID object. Currently we can > observe _HID/_CID through sysfs interfaces (hid/modalias), but there's > no mean for us to check _ADR/_UID from user space. This patch fix this > gap for ACPI developers and users. > why do we need to get this information from userspace? thanks, rui > Signed-off-by: Lv Zheng <lv.zheng@intel.com> > --- > drivers/acpi/scan.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index bb7fe47..df53190 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -216,6 +216,22 @@ acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *bu > static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); > > static ssize_t > +acpi_device_uid_show(struct device *dev, struct device_attribute *attr, char *buf) { > + struct acpi_device *acpi_dev = to_acpi_device(dev); > + > + return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); > +} > +static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); > + > +static ssize_t > +acpi_device_adr_show(struct device *dev, struct device_attribute *attr, char *buf) { > + struct acpi_device *acpi_dev = to_acpi_device(dev); > + > + return sprintf(buf, "0x%08x\n", (unsigned int)(acpi_dev->pnp.bus_address)); > +} > +static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); > + > +static ssize_t > acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { > struct acpi_device *acpi_dev = to_acpi_device(dev); > struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; > @@ -257,6 +273,11 @@ static int acpi_device_setup_files(struct acpi_device *dev) > goto end; > } > > + if (dev->flags.bus_address) > + result = device_create_file(&dev->dev, &dev_attr_adr); > + if (dev->pnp.unique_id) > + result = device_create_file(&dev->dev, &dev_attr_uid); > + > /* > * If device has _EJ0, 'eject' file is created that is used to trigger > * hot-removal function from userland. > @@ -281,6 +302,10 @@ static void acpi_device_remove_files(struct acpi_device *dev) > if (ACPI_SUCCESS(status)) > device_remove_file(&dev->dev, &dev_attr_eject); > > + if (dev->pnp.unique_id) > + device_remove_file(&dev->dev, &dev_attr_uid); > + if (dev->flags.bus_address) > + device_remove_file(&dev->dev, &dev_attr_adr); > device_remove_file(&dev->dev, &dev_attr_modalias); > device_remove_file(&dev->dev, &dev_attr_hid); > if (dev->handle) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH] ACPI: Add identification objects' user interface. 2012-09-27 1:45 ` Zhang Rui @ 2012-09-27 5:05 ` Zheng, Lv 0 siblings, 0 replies; 9+ messages in thread From: Zheng, Lv @ 2012-09-27 5:05 UTC (permalink / raw) To: Zhang, Rui; +Cc: Linux ACPI, Michael Kerrisk > > ACPI devices are glued with physical devices through _ADR object, ACPI > > enumerated devices are identified with _UID object. Currently we can > > observe _HID/_CID through sysfs interfaces (hid/modalias), but there's > > no mean for us to check _ADR/_UID from user space. This patch fix > > this gap for ACPI developers and users. > > > why do we need to get this information from userspace? Developers may want to check _ADR from user land to see whether the glue implementation is correct. Same situation may be encountered on _UID. We may discuss here to see whether the two files are required for ACPI users. Thus this optional feature hasn't been combined with the former _UID enabling one. Best regards/Lv Zheng > > Signed-off-by: Lv Zheng <lv.zheng@intel.com> > > --- > > drivers/acpi/scan.c | 25 +++++++++++++++++++++++++ > > 1 file changed, 25 insertions(+) > > > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index > > bb7fe47..df53190 100644 > > --- a/drivers/acpi/scan.c > > +++ b/drivers/acpi/scan.c > > @@ -216,6 +216,22 @@ acpi_device_hid_show(struct device *dev, struct > > device_attribute *attr, char *bu static DEVICE_ATTR(hid, 0444, > > acpi_device_hid_show, NULL); > > > > static ssize_t > > +acpi_device_uid_show(struct device *dev, struct device_attribute *attr, > char *buf) { > > + struct acpi_device *acpi_dev = to_acpi_device(dev); > > + > > + return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); } static > > +DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); > > + > > +static ssize_t > > +acpi_device_adr_show(struct device *dev, struct device_attribute *attr, > char *buf) { > > + struct acpi_device *acpi_dev = to_acpi_device(dev); > > + > > + return sprintf(buf, "0x%08x\n", (unsigned > > +int)(acpi_dev->pnp.bus_address)); } static DEVICE_ATTR(adr, 0444, > > +acpi_device_adr_show, NULL); > > + > > +static ssize_t > > acpi_device_path_show(struct device *dev, struct device_attribute *attr, > char *buf) { > > struct acpi_device *acpi_dev = to_acpi_device(dev); > > struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; @@ -257,6 > > +273,11 @@ static int acpi_device_setup_files(struct acpi_device *dev) > > goto end; > > } > > > > + if (dev->flags.bus_address) > > + result = device_create_file(&dev->dev, &dev_attr_adr); > > + if (dev->pnp.unique_id) > > + result = device_create_file(&dev->dev, &dev_attr_uid); > > + > > /* > > * If device has _EJ0, 'eject' file is created that is used to trigger > > * hot-removal function from userland. > > @@ -281,6 +302,10 @@ static void acpi_device_remove_files(struct > acpi_device *dev) > > if (ACPI_SUCCESS(status)) > > device_remove_file(&dev->dev, &dev_attr_eject); > > > > + if (dev->pnp.unique_id) > > + device_remove_file(&dev->dev, &dev_attr_uid); > > + if (dev->flags.bus_address) > > + device_remove_file(&dev->dev, &dev_attr_adr); > > device_remove_file(&dev->dev, &dev_attr_modalias); > > device_remove_file(&dev->dev, &dev_attr_hid); > > if (dev->handle) ^ permalink raw reply [flat|nested] 9+ messages in thread
* [RESEND PATCH] ACPI: Add _UID support for ACPI devices. 2012-09-27 1:17 [PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-27 1:33 ` Zhang Rui 2012-09-27 1:40 ` [PATCH] ACPI: Add identification objects' user interface Lv Zheng @ 2012-09-27 5:02 ` Lv Zheng 2012-09-28 0:39 ` [PATCH v2 0/2] ACPI: Add userland visibility for identification objects Lv Zheng 3 siblings, 0 replies; 9+ messages in thread From: Lv Zheng @ 2012-09-27 5:02 UTC (permalink / raw) To: Len Brown; +Cc: linux-acpi, Lv Zheng, Rui Zhang The _UID object is optional, but is required when the device has no other way to report a persistent unique device ID. This patch is required for ACPI 5.0 ACPI enumerated IP cores. Signed-off-by: Rui Zhang <rui.zhang@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> --- drivers/acpi/scan.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index d730a93..bb7fe47 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -327,6 +327,8 @@ static void acpi_device_release(struct device *dev) struct acpi_device *acpi_dev = to_acpi_device(dev); acpi_free_ids(acpi_dev); + if (acpi_dev->pnp.unique_id) + kfree(acpi_dev->pnp.unique_id); kfree(acpi_dev); } @@ -1162,6 +1164,9 @@ static void acpi_device_set_id(struct acpi_device *device) device->pnp.bus_address = info->address; device->flags.bus_address = 1; } + if (info->valid & ACPI_VALID_UID) { + device->pnp.unique_id = kstrdup(info->unique_id.string, GFP_KERNEL); + } kfree(info); -- 1.7.10 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v2 0/2] ACPI: Add userland visibility for identification objects. 2012-09-27 1:17 [PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng ` (2 preceding siblings ...) 2012-09-27 5:02 ` [RESEND PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng @ 2012-09-28 0:39 ` Lv Zheng 2012-09-28 0:40 ` [PATCH v2 1/2] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-28 0:40 ` [PATCH v2 2/2] ACPI: Add identification objects' user interface Lv Zheng 3 siblings, 2 replies; 9+ messages in thread From: Lv Zheng @ 2012-09-28 0:39 UTC (permalink / raw) To: Len Brown; +Cc: Michael Kerrisk, linux-acpi, Lv Zheng There are four important device identification objects currently used in the ACPI bus implementation: _HID/_CID: traditional enumerated devicess use this object for ACPI device matching. _ADR: the ACPI device/physical device binding codes will use this to find non-bridge devices. _UID: the ACPI enumerated devices require this object to identify itself. This patch set add the missing stuff useful for _UID in the ACPI devices. Tow sysfs interfaces are also introduced to allow developers monitor _ADR and _UID from the user space. Version 2 of this patch set fixed CodingStyle issues. The two patches are also combined to form a single patch set. Lv Zheng (2): ACPI: Add _UID support for ACPI devices. ACPI: Add identification objects' user interface. drivers/acpi/scan.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) -- 1.7.10 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v2 1/2] ACPI: Add _UID support for ACPI devices. 2012-09-28 0:39 ` [PATCH v2 0/2] ACPI: Add userland visibility for identification objects Lv Zheng @ 2012-09-28 0:40 ` Lv Zheng 2012-09-28 0:40 ` [PATCH v2 2/2] ACPI: Add identification objects' user interface Lv Zheng 1 sibling, 0 replies; 9+ messages in thread From: Lv Zheng @ 2012-09-28 0:40 UTC (permalink / raw) To: Len Brown; +Cc: Michael Kerrisk, linux-acpi, Lv Zheng, Rui Zhang The _UID object is optional, but is required when the device has no other way to report a persistent unique device ID. This patch is required for ACPI 5.0 ACPI enumerated IP cores. Signed-off-by: Rui Zhang <rui.zhang@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> --- drivers/acpi/scan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index d730a93..7e8a130 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -327,6 +327,7 @@ static void acpi_device_release(struct device *dev) struct acpi_device *acpi_dev = to_acpi_device(dev); acpi_free_ids(acpi_dev); + kfree(acpi_dev->pnp.unique_id); kfree(acpi_dev); } @@ -1162,6 +1163,9 @@ static void acpi_device_set_id(struct acpi_device *device) device->pnp.bus_address = info->address; device->flags.bus_address = 1; } + if (info->valid & ACPI_VALID_UID) + device->pnp.unique_id = kstrdup(info->unique_id.string, + GFP_KERNEL); kfree(info); -- 1.7.10 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v2 2/2] ACPI: Add identification objects' user interface. 2012-09-28 0:39 ` [PATCH v2 0/2] ACPI: Add userland visibility for identification objects Lv Zheng 2012-09-28 0:40 ` [PATCH v2 1/2] ACPI: Add _UID support for ACPI devices Lv Zheng @ 2012-09-28 0:40 ` Lv Zheng 1 sibling, 0 replies; 9+ messages in thread From: Lv Zheng @ 2012-09-28 0:40 UTC (permalink / raw) To: Len Brown; +Cc: Michael Kerrisk, linux-acpi, Lv Zheng ACPI devices are glued with physical devices through _ADR object, ACPI enumerated devices are identified with _UID object. Currently we can observe _HID/_CID through sysfs interfaces (hid/modalias), but there's no mean for us to check _ADR/_UID from user space. This patch fix this gap for ACPI developers and users. Signed-off-by: Lv Zheng <lv.zheng@intel.com> --- drivers/acpi/scan.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 7e8a130..3f522a9 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -215,6 +215,25 @@ acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *bu } static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); +static ssize_t acpi_device_uid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); +} +static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); + +static ssize_t acpi_device_adr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "0x%08x\n", + (unsigned int)(acpi_dev->pnp.bus_address)); +} +static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); + static ssize_t acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_device *acpi_dev = to_acpi_device(dev); @@ -257,6 +276,11 @@ static int acpi_device_setup_files(struct acpi_device *dev) goto end; } + if (dev->flags.bus_address) + result = device_create_file(&dev->dev, &dev_attr_adr); + if (dev->pnp.unique_id) + result = device_create_file(&dev->dev, &dev_attr_uid); + /* * If device has _EJ0, 'eject' file is created that is used to trigger * hot-removal function from userland. @@ -281,6 +305,10 @@ static void acpi_device_remove_files(struct acpi_device *dev) if (ACPI_SUCCESS(status)) device_remove_file(&dev->dev, &dev_attr_eject); + if (dev->pnp.unique_id) + device_remove_file(&dev->dev, &dev_attr_uid); + if (dev->flags.bus_address) + device_remove_file(&dev->dev, &dev_attr_adr); device_remove_file(&dev->dev, &dev_attr_modalias); device_remove_file(&dev->dev, &dev_attr_hid); if (dev->handle) -- 1.7.10 ^ permalink raw reply related [flat|nested] 9+ messages in thread
end of thread, other threads:[~2012-09-28 0:41 UTC | newest] Thread overview: 9+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2012-09-27 1:17 [PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-27 1:33 ` Zhang Rui 2012-09-27 1:40 ` [PATCH] ACPI: Add identification objects' user interface Lv Zheng 2012-09-27 1:45 ` Zhang Rui 2012-09-27 5:05 ` Zheng, Lv 2012-09-27 5:02 ` [RESEND PATCH] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-28 0:39 ` [PATCH v2 0/2] ACPI: Add userland visibility for identification objects Lv Zheng 2012-09-28 0:40 ` [PATCH v2 1/2] ACPI: Add _UID support for ACPI devices Lv Zheng 2012-09-28 0:40 ` [PATCH v2 2/2] ACPI: Add identification objects' user interface Lv Zheng
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