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i2c: i801: Fix Failed to allocate irq -2147483648 error
commit 6e0c9507bf
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 <hdegoede@redhat.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 3 additions and 0 deletions
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@ -1617,6 +1617,9 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
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/* Default timeout in interrupt mode: 200 ms */
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priv->adapter.timeout = HZ / 5;
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if (dev->irq == IRQ_NOTCONNECTED)
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priv->features &= ~FEATURE_IRQ;
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if (priv->features & FEATURE_IRQ) {
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u16 pcictl, pcists;
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