tree 0375a8959662747d4854cef9f686a78a1cfcf19c
parent baf4dc829574ed9dd8ba33cda0536a50f28937de
parent aa4a63dd981682b1742baa01237036e48bc11923
author Linus Torvalds <torvalds@linux-foundation.org> 1578350992 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1578350992 -0800
mergetag object aa4a63dd981682b1742baa01237036e48bc11923
 type commit
 tag tpmdd-next-20200106
 tagger Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> 1578332183 +0200
 
 tpmdd fixes for Linux v5.5-rc6
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Merge tag 'tpmdd-next-20200106' of git://git.infradead.org/users/jjs/linux-tpmdd

Pull tpmd fixes from Jarkko Sakkinen:
 "There has been a bunch of reports (e.g. [*]) reporting that when
  commit 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing
  IRQ's") and subsequent fixes are applied it causes boot freezes on
  some machines.

  Unfortunately hardware where this 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 patches were supposed to fix.

  With these patches reverted nothing fatal happens, TPM is fallbacked
  to be used in polling mode (which is not in the end too bad because
  there are no high throughput workloads for TPM).

  [*] https://bugzilla.kernel.org/show_bug.cgi?id=205935"

* tag 'tpmdd-next-20200106' of git://git.infradead.org/users/jjs/linux-tpmdd:
  tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's"
  tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts"
  tpm: Revert "tpm_tis: reserve chip for duration of tpm_tis_core_init"