From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: [PATCH] acpi: Incorrect ACPI tables walk in acpi_tables_sysfs_init Date: Thu, 21 Nov 2013 14:27:22 +0100 Message-ID: <10117757.kh27mk2tn6@vostro.rjw.lan> References: <87bo1e839w.fsf@tldlab276.tl.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <87bo1e839w.fsf@tldlab276.tl.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Jeremy Compostella Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Jeremy Compostella , "Gross, Mark" List-Id: linux-acpi@vger.kernel.org On Thursday, November 21, 2013 11:20:27 AM Jeremy Compostella wrote: > Date: Thu, 21 Nov 2013 11:20:23 +0100 > Message-ID: <87d2lu83a0.fsf@tldlab276.tl.intel.com> > MIME-Version: 1.0 > Content-Type: text/plain > --text follows this line-- > Hi, > > When executing on a ACPI Hardware reduced hardware, all the ACPI tables are not > exposed in sysfs due to the fact that FACS is silently ignored by the kernel in > ACPI hardware reduced and, moreover, the acpi_tables_sysfs_init ACPI table walk > is buggy and stop too soon. > > The acpi_tables_sysfs_init function should to rely on the appropriate > acpi_status return values to decide or not to stop the iteration. This way, > when running on a ACPI Reduced Harware environment where the FACS table is > silently ignored by the kernel or some ACPI table are not correctly memory > mapped or have a bad checksum it would not stop the iteration. > > Signed-off-by: Jeremy Compostella Since this is a fix, I've modified the subject and changelog slightly and queued up the patch for the next ACPI pull request (next week). Thanks! -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.