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Commit 1f6dbb02 authored by Mika Westerberg's avatar Mika Westerberg Committed by Rafael J. Wysocki
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i2c: i801: Do not create iTCO watchdog when WDAT table exists 



ACPI WDAT table is the preferred way to use hardware watchdog over the
native iTCO_wdt. Windows only uses this table for its hardware watchdog
implementation so we should be relatively safe to trust it has been
validated by OEMs

Prevent iTCO watchdog creation if we detect that there is ACPI WDAT table.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Acked-by: default avatarWolfram Sang <wsa@the-dreams.de>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 3413f702

drivers/i2c/busses/i2c-i801.c

+3 −1
Original line number Diff line number Diff line
@@ -1486,6 +1486,8 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) 
		priv->features |= FEATURE_IRQ;

		priv->features |= FEATURE_SMBUS_PEC;

		priv->features |= FEATURE_BLOCK_BUFFER;

		/* If we have ACPI based watchdog use that instead */

		if (!acpi_has_watchdog())

			priv->features |= FEATURE_TCO;

		priv->features |= FEATURE_HOST_NOTIFY;

		break;