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 code was supposed to fix. Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935 Cc: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Jarkko Sakkinen (1): tpm: Revert "tpm_tis: reserve chip for duration of tpm_tis_core_init" Stefan Berger (2): tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts" tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's" drivers/char/tpm/tpm_tis_core.c | 34 +++++++++++++++------------------ 1 file changed, 15 insertions(+), 19 deletions(-) -- 2.20.1
