git bisect start
# good: [805a6af8dba5dfdd35ec35dc52ec0122400b2610] Linux 3.2
git bisect good 805a6af8dba5dfdd35ec35dc52ec0122400b2610
# bad: [fd3930f70c8d14008f3377d51ce039806dfc542e] proc: more readdir conversion bug-fixes
git bisect bad fd3930f70c8d14008f3377d51ce039806dfc542e
# bad: [2474542f64432398f503373f53bdf620491bcfa8] Merge tag 'for-3.7-rc1' of git://gitorious.org/linux-pwm/linux-pwm
git bisect bad 2474542f64432398f503373f53bdf620491bcfa8
# good: [adefb69b1b94df29ea2df05cd838c0e032b2c473] HID: uhid: Fix sending events with invalid data
git bisect good adefb69b1b94df29ea2df05cd838c0e032b2c473
# good: [cea8f46c36c3f82860b038aa23a46e16757666ba] Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
git bisect good cea8f46c36c3f82860b038aa23a46e16757666ba
# good: [d9a807461fc8cc0d6ba589ea0730d139122af012] Merge tag 'usb-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect good d9a807461fc8cc0d6ba589ea0730d139122af012
# good: [612a9aab56a93533e76e3ad91642db7033e03b69] Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
git bisect good 612a9aab56a93533e76e3ad91642db7033e03b69
# good: [5e090ed7af10729a396a25df43d69a236e789736] Merge tag 'soc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good 5e090ed7af10729a396a25df43d69a236e789736
# bad: [bf7ad8eeab995710c766df49c9c69a8592ca0216] rbtree: move some implementation details from rbtree.h to rbtree.c
git bisect bad bf7ad8eeab995710c766df49c9c69a8592ca0216
# bad: [e9eca4de957ac33744fb994ccacd4a5102e445a8] Merge tag 'upstream-3.7-rc1-fastmap' of git://git.infradead.org/linux-ubi
git bisect bad e9eca4de957ac33744fb994ccacd4a5102e445a8
# good: [6432f2128414edbea5fd4f6c4fa4c28d0e1c6151] Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
git bisect good 6432f2128414edbea5fd4f6c4fa4c28d0e1c6151
# good: [7035cdf36d5c4d913f68ff97e1c2e5603500d946] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
git bisect good 7035cdf36d5c4d913f68ff97e1c2e5603500d946
# bad: [d43b7167d4c74137f9a6c61fdcead127d60357f9] Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
git bisect bad d43b7167d4c74137f9a6c61fdcead127d60357f9
# bad: [8fa6b970ff424539df074d71591fac6aa9d64b1f] Merge branch 'acpidump' into acpica
git bisect bad 8fa6b970ff424539df074d71591fac6aa9d64b1f
# bad: [7560452c1a4934049811fb6622fb753e8ad1c647] ACPICA: Update version to 20120816.
git bisect bad 7560452c1a4934049811fb6622fb753e8ad1c647
# bad: [e1154ebd4d0215937528016c41e2f13d30a28082] ACPICA: GPE Support: Update debug info for GPE tracing.
git bisect bad e1154ebd4d0215937528016c41e2f13d30a28082
# good: [d978348b300595b067b80980f6a78db09fcd584c] ACPICA: Split ACPICA initialization functions to new file, utxfinit.c
git bisect good d978348b300595b067b80980f6a78db09fcd584c
# bad: [a57f7f9175b8ccbc9df83ac13860488913115de4] ACPICA: Add Windows8/Server2012 string for _OSI method.
git bisect bad a57f7f9175b8ccbc9df83ac13860488913115de4
# good: [80187431762989ebade986468d3c548287a12689] ACPICA: Comment update: Fix some typos in actble.h
git bisect good 80187431762989ebade986468d3c548287a12689





a57f7f9175b8ccbc9df83ac13860488913115de4 is the first bad commit
commit a57f7f9175b8ccbc9df83ac13860488913115de4
Author: Bob Moore <robert.moore@intel.com>
Date:   Fri Aug 17 10:55:02 2012 +0800

    ACPICA: Add Windows8/Server2012 string for _OSI method.
    
    This change adds a new _OSI string, "Windows 2012" for both Windows 8
    and Windows Server 2012.
    
    From Microsoft document "How to Identify the Windows Version in ACPI
    by Using _OSI", July 13, 2012.
    
    Signed-off-by: Bob Moore <robert.moore@intel.com>
    Signed-off-by: Feng Tang <feng.tang@intel.com>
    Signed-off-by: Len Brown <len.brown@intel.com>

:040000 040000 55311ce2f9fed66501b06f93f67fa99b54d46e86 998889c21c3b68f8072ad131b643c592a4cbe423 M	drivers