Subject : ACPI Warning for \_SB_.BAT0._BIF: Converted Buffer to expected String at index 9 (20090903/nsrepair-132) Submitter : Justin Mattock <justinmattock@gmail.com> Date : 2009-10-08 21:46 References : http://marc.info/?l=linux-kernel&m=125504031328941&w=4 This entry is being used for tracking a regression from 2.6.31. Please don't close it until the problem is fixed in the mainline.
Created attachment 23347 [details] Silence _BIF warn patch please check this patch
Created attachment 23354 [details] bisectlog here is the results of git bisect: d9adc2e031bd22d5d9607a53a8d3b30e0b675f39 is the first bad commit commit d9adc2e031bd22d5d9607a53a8d3b30e0b675f39 Author: Lin Ming <ming.m.lin@intel.com> Date: Mon Jul 27 11:31:10 2009 +0800 ACPICA: reformat predefined method table, no functional change Reformatted the methods that return package objects. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> :040000 040000 17c30a6e75ce2fafc677b32bdcf3fbecae8458ab f43e38a2a4034bcc73ef14943e61187f11b08731 M drivers I will try and plugin individual commits to narrow this down when I get a chance.
First-Bad-Commit : d9adc2e031bd22d5d9607a53a8d3b30e0b675f39
Handled-By : Alexey Starikovskiy <astarikovskiy@suse.de> Patch : http://bugzilla.kernel.org/attachment.cgi?id=23347
The warnings can be safely ignored. The driver handles these cases correctly.
Please post the acpidump for the machine so we can examine the _BIF method.
On Tuesday 17 November 2009, Justin P. Mattock wrote: > Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a report > > of recent regressions. > > > > The following bug entry is on the current list of known regressions > > from 2.6.31. Please verify if it still should be listed and let me know > > (either way). > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14379 > > Subject : ACPI Warning for _SB_.BAT0._BIF: Converted Buffer to > expected String > > Submitter : Justin Mattock<justinmattock@gmail.com> > > Date : 2009-10-08 21:46 (40 days old) > > References : http://marc.info/?l=linux-kernel&m=125504031328941&w=4 > > Handled-By : Alexey Starikovskiy<astarikovskiy@suse.de> > > Patch : http://bugzilla.kernel.org/attachment.cgi?id=23347 > > > > > > > > > o.k. just pulled the latest to see, and > the warning message is there. > so yes this bug report should be open > until this is fixed.
patch in comment #1 is applied to the acpi tree
pulled and build just now a fresh kernel today from linus/2.6.git. Linux oddysseus 2.6.32-rc8a #7 Tue Dec 1 10:24:42 CET 2009 i686 GNU/Linux No "ACPI Warning for" messages anymore. Looks good.
Fixed by http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d0b3b119f4d9460f3947334cf384ae69c5417360