Den 18-01-2020 kl. 22:25, skrev Miaohe Lin:
From: Stefan Berger <stefanb@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx
Cc: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Tested-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Tested-by: Xiaoping Zhou <xiaoping.zhou@xxxxxxxxx>
Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
Reported-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm_tis_core.c | 1 -
1 file changed, 1 deletion(-)
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);
Please check before posting...
This is already reverted in 5.4.12 relased ~4 days ago..
--
Thomas
