The "pcc_subspace_idx" is -1 if it hasn't been initialized yet. We need
it to be signed.
Fixes: 337aadff8e45 ('ACPI: Introduce CPU performance controls using CPPC')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 0bbf84b..2ed5516 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -302,7 +302,7 @@ err_ret:
}
EXPORT_SYMBOL_GPL(acpi_get_psd_map);
-static int register_pcc_channel(unsigned pcc_subspace_idx)
+static int register_pcc_channel(int pcc_subspace_idx)
{
struct acpi_pcct_subspace *cppc_ss;
unsigned int len;
--
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