[PATCH 4.9 043/167] spi: img-spfi: Fix pm_runtime_get_sync() error checking

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Zheng Yongjun <zhengyongjun3@huawei.com>

[ Upstream commit cc470d55343056d6b2a5c32e10e0aad06f324078 ]

If the device is already in a runtime PM enabled state
pm_runtime_get_sync() will return 1, so a test for negative
value should be used to check for errors.

Fixes: deba25800a12b ("spi: Add driver for IMG SPFI controller")
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20220422062641.10486-1-zhengyongjun3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-img-spfi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index 2a340234c85c..82ab1bc2196a 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -771,7 +771,7 @@ static int img_spfi_resume(struct device *dev)
 	int ret;
 
 	ret = pm_runtime_get_sync(dev);
-	if (ret) {
+	if (ret < 0) {
 		pm_runtime_put_noidle(dev);
 		return ret;
 	}
-- 
2.35.1