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ACPI: SoC: APD: Check return value of acpi_dev_get_property()

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`fch_misc_setup()` uses `acpi_dev_get_property()` to read the value of
"is-rv" passed in by BIOS in ACPI tables. However, not all BIOSes
might pass in this property and hence it is important to first check
the return value of `acpi_dev_get_property()` before referencing the
object filled by it.

Signed-off-by: Furquan Shaikh <furquan@google.com>
[ rjw: Subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Furquan Shaikh 2020-08-19 10:16:56 -07:00 committed by Rafael J. Wysocki
parent 9123e3a74e
commit 6556b0a8ef
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/acpi_apd.c
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@ -99,8 +99,8 @@ static int fch_misc_setup(struct apd_private_data *pdata)
if (ret < 0)
return -ENOENT;
acpi_dev_get_property(adev, "is-rv", ACPI_TYPE_INTEGER, &obj);
clk_data->is_rv = obj->integer.value;
if (!acpi_dev_get_property(adev, "is-rv", ACPI_TYPE_INTEGER, &obj))
clk_data->is_rv = obj->integer.value;
list_for_each_entry(rentry, &resource_list, node) {
clk_data->base = devm_ioremap(&adev->dev, rentry->res->start,