From 5b359c7c43727e624eac3efc7ad21bd2defea161 Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Tue, 20 Aug 2019 08:25:17 -0400 Subject: [PATCH] tpm_tis_core: Turn on the TPM before probing IRQ's The interrupt probing sequence in tpm_tis_core cannot obviously run with the TPM power gated. Power on the TPM with tpm_chip_start() before probing IRQ's. Turn it off once the probing is complete. Cc: linux-stable@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Stefan Berger Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/tpm_tis_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index c3181ea9f271..ffa9048d8f6c 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -980,6 +980,7 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, goto out_err; } + tpm_chip_start(chip); if (irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, irq); @@ -989,6 +990,7 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, } else { tpm_tis_probe_irq(chip, intmask); } + tpm_chip_stop(chip); } rc = tpm_chip_register(chip);