I think the reason problem is that: 1. there are zero length IO/Memory resources for these machines, and for those resources a) w/o commit b355cee88e3b1a193f0e9a81db810f6f83ad728b, acpi_dev_resource_memory/io returns true b) w commit b355cee88e3b1a193f0e9a81db810f6f83ad728b, acpi_dev_resource_memory/io returns false 2. in pnpacpi_allocated_resource(), when acpi_dev_resource_memory/io() returns false, it translates into "the resource is not IO/Memory resource". IMO, the root cause is that the BOOL return value of acpi_dev_resource_memory/io() can not represent the following three situations 1) a valid IO/Memory resource 2) an invalid IO/Memory resource 3) not an IO/Memory resource Thanks, rui > -----Original Message----- > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > owner@xxxxxxxxxxxxxxx] On Behalf Of Rafael J. Wysocki > Sent: Tuesday, March 11, 2014 9:00 PM > To: Markus Trippelsdorf > Cc: linux-acpi@xxxxxxxxxxxxxxx; Zhang, Rui; Wysocki, Rafael J; linux- > kernel@xxxxxxxxxxxxxxx > Subject: Re: "can't evaluate _CRS: 1" messages since b355cee [ACPI / > resources: ignore invalid ACPI device resources] > Importance: High > > On Tuesday, March 11, 2014 09:44:09 AM Markus Trippelsdorf wrote: > > Since: > > commit b355cee88e3b1a193f0e9a81db810f6f83ad728b > > Author: Zhang Rui <rui.zhang@xxxxxxxxx> > > Date: Thu Feb 27 11:37:15 2014 +0800 > > > > ACPI / resources: ignore invalid ACPI device resources > > > > The following error message is printed three times during boot on my > > machine: "can't evaluate _CRS: 1" > > It may be catching a BIOS bug actually. > > Please attach the output of acpidump from that system. > > > Here's the dmesg diff: > > > > @@ -308,6 +308,8 @@ > > Switched to clocksource hpet > > pnp: PnP ACPI init > > ACPI: bus type PNP registered > > +pnp 00:00: unknown resource type 10 in _CRS pnp 00:00: can't > evaluate > > +_CRS: 1 > > system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active) pnp > > 00:01: [dma 4] pnp 00:01: Plug and Play ACPI device, IDs PNP0200 > > (active) @@ -318,6 +320,8 @@ system 00:06: [mem > > 0xfec00000-0xfec00fff] could not be reserved system 00:06: [mem > > 0xfee00000-0xfee00fff] has been reserved system 00:06: Plug and Play > > ACPI device, IDs PNP0c02 (active) > > +pnp 00:07: unknown resource type 4 in _CRS pnp 00:07: can't evaluate > > +_CRS: 1 > > system 00:07: [io 0x04d0-0x04d1] has been reserved system 00:07: > > [io 0x040b] has been reserved system 00:07: [io 0x04d6] has been > > reserved @@ -334,19 +338,9 @@ system 00:07: [io 0x0cd8-0x0cdf] has > > been reserved system 00:07: [io 0x0b00-0x0b3f] has been reserved > > system 00:07: [io 0x0800-0x089f] could not be reserved -system 00:07: > > [io 0x0b00-0x0b0f] has been reserved -system 00:07: [io > > 0x0b20-0x0b3f] has been reserved -system 00:07: [io 0x0900-0x090f] > > has been reserved -system 00:07: [io 0x0910-0x091f] has been > reserved > > -system 00:07: [io 0xfe00-0xfefe] has been reserved -system 00:07: > > [mem 0xdff00000-0xdfffffff] has been reserved -system 00:07: [mem > > 0xffb80000-0xffbfffff] has been reserved -system 00:07: [mem > > 0xfec10000-0xfec1001f] has been reserved system 00:07: Plug and Play > > ACPI device, IDs PNP0c02 (active) -system 00:08: [io 0x0230-0x023f] > > has been reserved -system 00:08: [io 0x0290-0x029f] has been > reserved > > -system 00:08: [io 0x0f40-0x0f4f] has been reserved -system 00:08: > > [io 0x0a30-0x0a3f] has been reserved > > +pnp 00:08: unknown resource type 4 in _CRS pnp 00:08: can't evaluate > > +_CRS: 1 > > system 00:08: Plug and Play ACPI device, IDs PNP0c02 (active) > system > > 00:09: [mem 0xe0000000-0xefffffff] has been reserved system 00:09: > > Plug and Play ACPI device, IDs PNP0c02 (active) > > > > > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center. > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" > in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo > info at http://vger.kernel.org/majordomo-info.html ��.n��������+%������w��{.n�����{�����ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
