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. this patch is made base on "add IRQF_NO_AUTOEN for request_irq" which is being merged: https://lore.kernel.org/patchwork/patch/1388765/ Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx> --- drivers/i2c/busses/i2c-qup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index 61dc20f..324ced7 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -1797,12 +1797,12 @@ static int qup_i2c_probe(struct platform_device *pdev) goto fail; ret = devm_request_irq(qup->dev, qup->irq, qup_i2c_interrupt, - IRQF_TRIGGER_HIGH, "i2c_qup", qup); + IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN, + "i2c_qup", qup); if (ret) { dev_err(qup->dev, "Request %d IRQ failed\n", qup->irq); goto fail; } - disable_irq(qup->irq); hw_ver = readl(qup->base + QUP_HW_VERSION); dev_dbg(qup->dev, "Revision %x\n", hw_ver); -- 2.7.4
