On 31.05.2014 13:01, Christian Zigotzky wrote:
On 31.05.2014 12:28, Christian Zigotzky wrote:
On 29.05.2014 04:48, Michael Ellerman wrote:
On Wed, 2014-05-28 at 13:25 +0200, Christian Zigotzky wrote:
On 28.05.2014 10:53, Christian Zigotzky wrote:
Hi Michael,
Thank you for your answer and thank you for your help. :-)
On 28.05.2014 06:23, Michael Ellerman wrote:
On Wed, 2014-05-28 at 01:08 +0200, Christian Zigotzky wrote:
I'm going to guess that cd427485357c0c4b99f69719251baacf25946e11 is
BAD. Can
you please confirm or deny that?
It's not BAD. It boots.
Hmm, interesting.
If cd42748 is *good*, then you'll need to do a bigger bisect from
d8ff9cd to
18a1a7a.
OK :-)
-> git clone
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
linux2-git
-> git bisect start
-> git bisect good d8ff9cdf68fd119d491f3de90e1a612afc2f3b2b
-> git bisect bad 18a1a7a1d862ae0794a0179473d08a414dd49234
Output:
Bisecting: 5900 revisions left to test after this (roughly 13 steps)
[cb1595563880a81dab6eab9a5ecb4520d2e76077] Merge tag 'tty-3.15-rc1' of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Unfortunately it doesn't boot. :-(
OK. So you do:
$ git bisect bad
And it will pick a new commit for you to test. Repeat that ~13 times
and you
should have identified the bad commit.
OK :-)
git bisect bad
Bisecting: 2902 revisions left to test after this (roughly 12 steps)
[b22f136071b1a797e96b3ee6fb0dc32625bd152e] staging: rtl8821ae: Fix
quoted string split across lines <- Kernel boots :-)
What shall I do next?
OK, I know it: git bisect good
-- Christian
git bisect good
Bisecting: 1494 revisions left to test after this (roughly 11 steps)
[3786075b5ebc8c4eaefd9e3ebf72883934fb64b3] Merge tag 'regulator-v3.15'
of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator <-
Kernel boots
git bisect good
Bisecting: 797 revisions left to test after this (roughly 10 steps)
[69dd89fd2b9406603d218cab8996cfb232d5b8b9] Merge tag 'asoc-v3.15-4' of
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into
for-linus <- Kernel boots
git bisect good
Bisecting: 372 revisions left to test after this (roughly 9 steps)
[4b1779c2cf030c68aefe939d946475e4136c1895] Merge tag 'pci-v3.15-changes'
of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci <- Doesn't boot
git bisect bad
Bisecting: 212 revisions left to test after this (roughly 8 steps)
[45b15d98a96ffdb3c608bdad952f51930c151420] Merge remote-tracking
branches 'spi/topic/xilinx' and 'spi/topic/xtfpga' into spi-next <-
Kernel boots
git bisect good
Bisecting: 118 revisions left to test after this (roughly 7 steps)
[91b4adc983d8e9975bc677c2b8395631edf7b92d] Merge branch 'pci/misc' into
next <- Kernel boots
git bisect good
Bisecting: 41 revisions left to test after this (roughly 6 steps)
[26f31fb936042459d481557a83bda7a3f4d61906] Merge tag 'hwmon-for-linus'
of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging <-
Kernel boots
git bisect good
Bisecting: 20 revisions left to test after this (roughly 4 steps)
[e20fa6609a0076def469aeb799b1c25558e70042] PCI: Don't check
resource_size() in pci_bus_alloc_resource() <- Doesn't boot
git bisect bad
Bisecting: 10 revisions left to test after this (roughly 3 steps)
[cd8a4d3657c3f2cf9ce3780707be1debb8fea6e2] PCI: Check IORESOURCE_UNSET
before updating BAR <- Doesn't boot
git bisect bad
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[5edb93b89f6cc3089ee283656555e7a9ad36a8a0] resource: Add
resource_contains() <- Kernel boots
git bisect good
Bisecting: 2 revisions left to test after this (roughly 1 step)
[f44116ae881868ab72274df1eff48fdbde9898af] PCI: Remove
pci_find_parent_resource() use for allocation <- Doesn't boot
git bisect bad
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[d19cb803a2ff85d1b64b9628e1aec2aa76a9260b] vsprintf: Add support for
IORESOURCE_UNSET in %pR <- Kernel boots
git bisect good
f44116ae881868ab72274df1eff48fdbde9898af is the first bad commit
commit f44116ae881868ab72274df1eff48fdbde9898af
Author: Bjorn Helgaas <bhelg...@google.com>
Date: Wed Feb 26 11:25:58 2014 -0700
PCI: Remove pci_find_parent_resource() use for allocation
If the resource hasn't been allocated yet,
pci_find_parent_resource() is
documented as returning the region "where it should be allocated from."
This is impossible in general because there may be several
candidates: a
prefetchable BAR can be put in either a prefetchable or
non-prefetchable
window, a transparent bridge may have overlapping positively- and
subtractively-decoded windows, and a root bus may have several
windows of
the same type.
Allocation should be done by pci_bus_alloc_resource(), which iterates
through all bus resources and looks for the best match, e.g., one
with the
desired prefetchability attributes, and falls back to less-desired
possibilities.
The only valid use of pci_find_parent_resource() is to find the
parent of
an already-allocated resource so we can claim it via
request_resource(),
and all we need for that is a bus region of the correct type that
contains
the resource.
Note that like 8c8def26bfaa ("PCI: allow matching of prefetchable
resources
to non-prefetchable windows"), this depends on
pci_bus_for_each_resource()
iterating through positively-decoded regions before
subtractively-decoded
ones. We prefer not to return a subtractively-decoded region because
requesting from it will likely conflict with the overlapping
positively-
decoded window (see Launchpad report below).
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/424142
Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
CC: Linus Torvalds <torva...@linux-foundation.org>
:040000 040000 d9f2e04d3a635126a3c42406400b156aea3d2e30
43278454117307fa7e155fb241b16b1863ea45d0 M drivers
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