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| author | Stefan Berger <stefanb@linux.ibm.com> | 2019-11-26 08:17:52 -0500 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2020-01-06 19:36:09 +0200 |
| commit | dda8b2af395b2ed508e2ef314ae32e122841b447 (patch) | |
| tree | 4177c57e86f38348956e1b446594e818adbcbb5f /drivers/char | |
| parent | 9550f210492c6f88415709002f42a9d15c0e6231 (diff) | |
| download | linux-dda8b2af395b2ed508e2ef314ae32e122841b447.tar.gz | |
tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts"
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.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935
Fixes: 1ea32c83c699 ("tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts")
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>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm_tis_core.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 8af2cee1a762..5dc52c4e2292 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -1060,7 +1060,6 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, } tpm_chip_start(chip); - chip->flags |= TPM_CHIP_FLAG_IRQ; if (irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, irq); |