ACPI / CPPC: signedness bug in register_pcc_channel()
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@oracle.com>
Acked-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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 @@
}
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;