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HID: i2c-hid: use correct type for ACPI _DSM parameter

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ACPI 5.0 specification requires the fourth parameter to the _DSM (Device
Specific Method) to be of type package instead of integer. Failing to do
that we get following warning on the console:

  ACPI Warning: \_SB_.PCI0.I2C1.TPL0._DSM: Argument #4 type mismatch - Found [Integer],
                ACPI requires [Package] (20130517/nsarguments-95)

Fix this by passing an empty package to the _DSM method. The HID over I2C
specification doesn't require any specific values to be passed with this
parameter.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Mika Westerberg 2013-08-19 14:01:17 +03:00 committed by Jiri Kosina
parent 58c59bc997
commit 75ba899e95
1 changed files with 3 additions and 2 deletions
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5
drivers/hid/i2c-hid/i2c-hid.c
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@ -897,8 +897,9 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client,
params[1].integer.value = 1;
params[2].type = ACPI_TYPE_INTEGER;
params[2].integer.value = 1; /* HID function */
params[3].type = ACPI_TYPE_INTEGER;
params[3].integer.value = 0;
params[3].type = ACPI_TYPE_PACKAGE;
params[3].package.count = 0;
params[3].package.elements = NULL;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DSM", &input, &buf))) {
dev_err(&client->dev, "device _DSM execution failed\n");