disable_irq() after request_irq() still has a time gap in which interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will disable IRQ auto-enable because of requesting. Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx> Link: https://lore.kernel.org/patchwork/patch/1388765/ v2: add the Link. --- drivers/char/tpm/tpm_tis_i2c_cr50.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/tpm/tpm_tis_i2c_cr50.c b/drivers/char/tpm/tpm_tis_i2c_cr50.c index ec9a65e..25299e5 100644 --- a/drivers/char/tpm/tpm_tis_i2c_cr50.c +++ b/drivers/char/tpm/tpm_tis_i2c_cr50.c @@ -705,14 +705,14 @@ static int tpm_cr50_i2c_probe(struct i2c_client *client, if (client->irq > 0) { rc = devm_request_irq(dev, client->irq, tpm_cr50_i2c_int_handler, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_NO_AUTOEN, dev->driver->name, chip); if (rc < 0) { dev_err(dev, "Failed to probe IRQ %d\n", client->irq); return rc; } - disable_irq(client->irq); priv->irq = client->irq; } else { dev_warn(dev, "No IRQ, will use %ums delay for TPM ready\n", -- 2.7.4
