From 9c71f896bb8f3b7bb228ece70341b26b2ff32ae9 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 22 Nov 2017 12:28:17 +0100 Subject: [PATCH] i2c: i801: Fix Failed to allocate irq -2147483648 error commit 6e0c9507bf51e1517a80ad0ac171e5402528fcef upstream. On Apollo Lake devices the BIOS does not set up IRQ routing for the i801 SMBUS controller IRQ, so we end up with dev->irq set to IRQ_NOTCONNECTED. Detect this and do not try to use the irq in this case silencing: i801_smbus 0000:00:1f.1: Failed to allocate irq -2147483648: -107 BugLink: https://communities.intel.com/thread/114759 Signed-off-by: Hans de Goede Reviewed-by: Jean Delvare Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman --- drivers/i2c/busses/i2c-i801.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 9e12a53..8eac00e 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1617,6 +1617,9 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) /* Default timeout in interrupt mode: 200 ms */ priv->adapter.timeout = HZ / 5; + if (dev->irq == IRQ_NOTCONNECTED) + priv->features &= ~FEATURE_IRQ; + if (priv->features & FEATURE_IRQ) { u16 pcictl, pcists; -- 2.7.4