[PATCH] PSCI: Print a warning if PSCI doesn't accept PC mode

[Dmitry Baryshkov]

The function psci_pd_try_set_osi_mode() will print an error if enabling
OSI mode fails. To ease debugging PSCI issues print corresponding
message if switching to PC mode fails too.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/firmware/psci/psci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index cfb448eabdaa..b907768eea01 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -597,7 +597,9 @@ static int __init psci_1_0_init(struct device_node *np)
 		pr_info("OSI mode supported.\n");
 
 		/* Default to PC mode. */
-		psci_set_osi_mode(false);
+		err = psci_set_osi_mode(false);
+		if (err)
+			pr_info("setting PC mode failed with %d\n", err);
 	}
 
 	return 0;
-- 
2.35.1