Thanks Joseph.
In the meantime, I finished the bisect. It tells me the following commit is to
blame:
87bd13c6f9776e18ab9a5192325c54621db8a2af is the first bad commit
commit 87bd13c6f9776e18ab9a5192325c54621db8a2af
Author: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
Date: Mon Jun 27 07:10:51 2016 -0600
tpm_crb: fix mapping of the buffers
BugLink: http://bugs.launchpad.net/bugs/1596469
On my Lenovo x250 the following situation occurs:
[18697.813871] tpm_crb MSFT0101:00: can't request region for resource
[mem 0xacdff080-0xacdfffff]
The mapping of the control area overlaps the mapping of the command
buffer. The control area is mapped over page, which is not right. It
should mapped over sizeof(struct crb_control_area).
Fixing this issue unmasks another issue. Command and response buffers
can overlap and they do interleave on this machine. According to the PTP
specification the overlapping means that they are mapped to the same
buffer.
The commit has been also on a Haswell NUC where things worked before
applying this fix so that the both code paths for response buffer
initialization are tested.
Cc: sta...@vger.kernel.org
Fixes: 1bd047be37d9 ("tpm_crb: Use devm_ioremap_resource")
Signed-off-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jguntho...@obsidianresearch.com>
(cherry picked from linux-next commit
0af6e0a2da2e4fedaa2743333da438d3b879192b)
Signed-off-by: Tim Gardner <tim.gard...@canonical.com>
Acked-by: Stefan Bader <stefan.ba...@canonical.com>
Acked-by: Brad Figg <brad.f...@canonical.com>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
:040000 040000 84dfc36e75e151c51541109acdf6dc2a7a620398
a236ec06194abc467c852316b1b50f3b3a9ae7f0 M drivers
That also leads me to try a workaround. When I blacklist the tpm_crb
module, I can suspend to my hearts delight. Or at least, more than two
times in a row ;)
** Tags added: bisect-done tpm workaround
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