Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH V7 5/7] ACPI: Delay the enumeration on the devices whose dependency has not met | Date | Mon, 13 Mar 2017 22:24:34 +0100 |
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On Monday, March 13, 2017 10:42:41 AM zhichang.yuan wrote: > In commit 40e7fcb1929(ACPI: Add _DEP support to fix battery issue on Asus > T100TA), the '_DEP' was supported to solve the dependency of Asus battery. But > this patch is specific to Asus battery device. > In the real world, there are other devices which need the dependency to play the > role on the enumeration order. For example, all the Hip06 LPC > periperals(IPMI-BT, uart, etc) must be scanned after the LPC host driver > finished the probing. So, it makes sense to add a checking whether the ACPI > device meet all the dependencies during its enumeration slot, if not, the > enumeration will be delayed till all dependency master finish their work. > > This patch adds the dependency checking in ACPI enumeration, also the > corresponding handling to retrigger the Hip06 LPC peripherals' scanning.
AFAICS, _DEP is generally abused in the wild and cannot be made generic. Sorry.
Thanks, Rafael
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