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Subject[PATCH v11 03/14] tpm, tpm_tis: Disable interrupts if tpm_tis_probe_irq() failed
Date
From: Lino Sanfilippo <l.sanfilippo@kunbus.com>

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>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Michael Niewöhner <linux@mniewoehner.de>
---
drivers/char/tpm/tpm_tis_core.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index d2c9c9d76893..603b82ca56da 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -1091,21 +1091,21 @@ 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);
}
}

--
2.36.1
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