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2e1a0a118a
commitaa4a63dd98upstream. There has been a bunch of reports (one from kernel bugzilla linked) reporting that when this commit is applied it causes on some machines boot freezes. Unfortunately hardware where this commit causes a failure is not widely available (only one I'm aware is Lenovo T490), which means we cannot predict yet how long it will take to properly fix tpm_tis interrupt probing. Thus, the least worst short term action is to revert the code to the state before this commit. In long term we need fix the tpm_tis probing code to work on machines that Stefan's fix was supposed to fix. Fixes:21df4a8b60("tpm_tis: reserve chip for duration of tpm_tis_core_init") Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935 Cc: stable@vger.kernel.org Cc: Jerry Snitselaar <jsnitsel@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Tested-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Xiaoping Zhou <xiaoping.zhou@intel.com> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reported-by: Jerry Snitselaar <jsnitsel@redhat.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.