Messages in this thread | | | Date | Mon, 20 Sep 2004 12:24:04 -0700 | From | Keshavamurthy Anil S <> | Subject | Re: [ACPI] PATCH-ACPI based CPU hotplug[2/6]-ACPI Eject interface support |
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On Mon, Sep 20, 2004 at 01:33:42PM -0500, Dmitry Torokhov wrote: > On Monday 20 September 2004 11:35 am, Keshavamurthy Anil S wrote: > > This patch support /sys/firmware/acpi/eject interface where in > > the ACPI device say "LSB0" can be ejected by echoing "\_SB.LSB0" > > > /sys/firmware/acpi/eject > > > > I wonder if eject should be an attribute of an individual device and visible > only when device can be ejected. Reading from it could show eject level > (_EJ0/_EJ3 etc). Hi Dmitry, Today there is really no sysfs representation of acpi devices apart from the acpi namespace representation. Evaluating acpi namespaces's _EJ0 method won't help, as we need acpi device and all its child devices to be removed as part of the eject.
Also for there is no 1:1 maping of acpi devices to pci devices to consider eject to be part of the pci devices.
Hence the best solution for now is to echo ACPI full path name of the device to be ejected onto the eject file and the code will make sure that the device supports _EJx method before actuall removing the device.
thanks, Anil > > -- > Dmitry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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