From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: Possible dcache BUG Date: 13 Sep 2004 00:53:03 -0400 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <1095051183.2984.7.camel@d845pe> References: <20040808113930.24ae0273.akpm@osdl.org> <200408100012.08945.gene.heskett@verizon.net> <200408102342.12792.gene.heskett@verizon.net> <20040810211849.0d556af4@laptop.delusion.de> <20040812180033.62b389db@laptop.delusion.de> <20040912000354.7243a328@laptop.delusion.de> <20040912001626.759e2d17.akpm@osdl.org> <20040912002945.29a976ad@laptop.delusion.de> <20040912004812.3544c6de.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20040912004812.3544c6de.akpm-3NddpPZAyC0@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Andrew Morton Cc: "Udo A. Steinberg" , Linus Torvalds , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ACPI Developers List-Id: linux-acpi@vger.kernel.org On Sun, 2004-09-12 at 03:48, Andrew Morton wrote: > "Udo A. Steinberg" wrote: > > > > On Sun, 12 Sep 2004 00:16:26 -0700 Andrew Morton (AM) wrote: > > > > AM> Random guess: acpi_evaluate_object() is returning an error but > is > > AM> allocating memory anyway. > > AM> > > AM> In acpi_battery_get_status(): > > AM> > > AM> status = acpi_evaluate_object(battery->handle, "_BST", NULL, > &buffer); > > AM> if (ACPI_FAILURE(status)) { > > AM> ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating > _BST\n")); > > AM> return_VALUE(-ENODEV); > > AM> } > > AM> > > AM> Is that failure path being taken? > > > > Is there a way for me to find that out without recompiling and > rebooting? > > Looks like you need to set CONFIG_ACPI_DEBUG and then put the > right number into /proc/acpi/debug_layer. For the battery module: # echo 0x00040000 > /proc/acpi/debug_layer and then to turn on everything about it: # echo 0xffffffff > /proc/acpi/debug_level These hooks exist only if the kernel is built with CONFIG_ACPI_DEBUG. It would be interesting to know if you can examine the contents of /proc/acpi/battery/*/* thanks, -Len ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php