4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Gerlach <d-gerlach@xxxxxx>
commit ad8529fde9e3601180a839867a8ab041109aebb5 upstream.
Currently omap-rng checks the return value of pm_runtime_get_sync and
reports failure if anything is returned, however it should be checking
if ret < 0 as pm_runtime_get_sync return 0 on success but also can return
1 if the device was already active which is not a failure case. Only
values < 0 are actual failures.
Fixes: 61dc0a446e5d ("hwrng: omap - Fix assumption that runtime_get_sync will always succeed")
Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/hw_random/omap-rng.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -385,7 +385,7 @@ static int omap_rng_probe(struct platfor
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_get_sync(&pdev->dev);
- if (ret) {
+ if (ret < 0) {
dev_err(&pdev->dev, "Failed to runtime_get device: %d\n", ret);
pm_runtime_put_noidle(&pdev->dev);
goto err_ioremap;
@@ -443,7 +443,7 @@ static int __maybe_unused omap_rng_resum
int ret;
ret = pm_runtime_get_sync(dev);
- if (ret) {
+ if (ret < 0) {
dev_err(dev, "Failed to runtime_get device: %d\n", ret);
pm_runtime_put_noidle(dev);
return ret;
--
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