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tpm, tpm_tis: Disable interrupts if tpm_tis_probe_irq() failed

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[ Upstream commit 6d789ad726950e612a7f31044260337237c5b490 ]

Both functions tpm_tis_probe_irq_single() and tpm_tis_probe_irq() may setup
the interrupts and then return with an error. This case is indicated by a
missing TPM_CHIP_FLAG_IRQ flag in chip->flags.
Currently the interrupt setup is only undone if tpm_tis_probe_irq_single()
fails. Undo the setup also if tpm_tis_probe_irq() fails.

Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Tested-by: Michael Niewöhner <linux@mniewoehner.de>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Stable-dep-of: 955df4f87760 ("tpm, tpm_tis: Claim locality when interrupts are reenabled on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lino Sanfilippo 2022-11-24 14:55:27 +01:00 • committed by Greg Kroah-Hartman
parent 10eea3cfda
commit 0085052a2c
1 changed files with 11 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

22
drivers/char/tpm/tpm_tis_core.c
View file

@ -1087,21 +1087,21 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
goto out_err;
}
if (irq) {
if (irq)
tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
irq);
if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) {
dev_err(&chip->dev, FW_BUG
else
tpm_tis_probe_irq(chip, intmask);
if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) {
dev_err(&chip->dev, FW_BUG
"TPM interrupt not working, polling instead\n");
rc = request_locality(chip, 0);
if (rc < 0)
goto out_err;
disable_interrupts(chip);
release_locality(chip, 0);
}
} else {
tpm_tis_probe_irq(chip, intmask);
rc = request_locality(chip, 0);
if (rc < 0)
goto out_err;
disable_interrupts(chip);
release_locality(chip, 0);
}
}