[PATCH] ACPI: CPPC: fix return value in register_pcc_channel()

[Kai Song]

It uses IS_ERR to judge the return value of
pcc_mbox_request_channel().If it is invalid, maybe we should
use PTR_ERR to get the correct return value.

Signed-off-by: Kai Song <songkai01@xxxxxxxxxx>
---
 drivers/acpi/cppc_acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index bd482108310c..0bbb5fa27ce7 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -503,7 +503,7 @@ static int register_pcc_channel(int pcc_ss_idx)
 		if (IS_ERR(pcc_data[pcc_ss_idx]->pcc_channel)) {
 			pr_err("Failed to find PCC channel for subspace %d\n",
 			       pcc_ss_idx);
-			return -ENODEV;
+			return PTR_ERR(pcc_data[pcc_ss_idx]->pcc_channel);
 		}
 
 		/*
-- 
2.27.0