From 45ffad151baed2e946658da840fd043ff2ef14eb Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 9 Sep 2020 12:43:04 +0300
Subject: [PATCH] spi: stm32: fix pm_runtime_get_sync() error checking

[ Upstream commit c170a5a3b6944ad8e76547c4a1d9fe81c8f23ac8 ]

The pm_runtime_get_sync() can return either 0 or 1 on success but this
code treats 1 as a failure.

Fixes: db96bf976a4f ("spi: stm32: fixes suspend/resume management")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Alain Volmat <alain.volmat@st.com>
Link: https://lore.kernel.org/r/20200909094304.GA420136@mwanda
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-stm32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index 09b418ff99b1..9d8ceb63f7db 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -2054,7 +2054,7 @@ static int stm32_spi_resume(struct device *dev)
 	}
 
 	ret = pm_runtime_get_sync(dev);
-	if (ret) {
+	if (ret < 0) {
 		dev_err(dev, "Unable to power device:%d\n", ret);
 		return ret;
 	}