Commit 8d485da0 authored by Matthew Garrett's avatar Matthew Garrett Committed by Daniel Lezcano

thermal/int340x_thermal: Don't require IDSP to exist

The IDSP method doesn't appear to exist on the most recent Intel platforms:
instead, the IDSP data is included in the GDDV blob. Since we probably
don't want to decompress and parse that in-kernel, just allow any UUID to
be written if IDSP is missing.
Signed-off-by: default avatarMatthew Garrett <mjg59@google.com>
Tested-by: default avatarPandruvada, Srinivas <srinivas.pandruvada@linux.intel.com>
[ rzhang: fix checkpatch warning in changelog ]
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20200414020953.255364-3-matthewgarrett@google.com
parent 006f006f
......@@ -96,6 +96,9 @@ static ssize_t available_uuids_show(struct device *dev,
int i;
int length = 0;
if (!priv->uuid_bitmap)
return sprintf(buf, "UNKNOWN\n");
for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
if (priv->uuid_bitmap & (1 << i))
if (PAGE_SIZE - length > 0)
......@@ -113,11 +116,11 @@ static ssize_t current_uuid_show(struct device *dev,
{
struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
if (priv->uuid_bitmap & (1 << priv->current_uuid_index))
if (priv->current_uuid_index == -1)
return sprintf(buf, "INVALID\n");
return sprintf(buf, "%s\n",
int3400_thermal_uuids[priv->current_uuid_index]);
else
return sprintf(buf, "INVALID\n");
}
static ssize_t current_uuid_store(struct device *dev,
......@@ -128,9 +131,16 @@ static ssize_t current_uuid_store(struct device *dev,
int i;
for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
if ((priv->uuid_bitmap & (1 << i)) &&
!(strncmp(buf, int3400_thermal_uuids[i],
sizeof(int3400_thermal_uuids[i]) - 1))) {
if (!strncmp(buf, int3400_thermal_uuids[i],
sizeof(int3400_thermal_uuids[i]) - 1)) {
/*
* If we have a list of supported UUIDs, make sure
* this one is supported.
*/
if (priv->uuid_bitmap &&
!(priv->uuid_bitmap & (1 << i)))
return -EINVAL;
priv->current_uuid_index = i;
return count;
}
......@@ -464,9 +474,13 @@ static int int3400_thermal_probe(struct platform_device *pdev)
priv->adev = adev;
result = int3400_thermal_get_uuids(priv);
if (result)
/* Missing IDSP isn't fatal */
if (result && result != -ENODEV)
goto free_priv;
priv->current_uuid_index = -1;
result = acpi_parse_art(priv->adev->handle, &priv->art_count,
&priv->arts, true);
if (result)
......
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