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hwrng: omap - Only fail if pm_runtime_get_sync returns < 0

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commit ad8529fde9 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: 61dc0a446e ("hwrng: omap - Fix assumption that runtime_get_sync will always succeed")
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dave Gerlach
2016-09-20 10:25:40 -05:00
committed by Greg Kroah-Hartman
parent 2b1309856d
commit 1ea1d49d16
1 changed files with 2 additions and 2 deletions
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4
drivers/char/hw_random/omap-rng.c
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@@ -385,7 +385,7 @@ static int omap_rng_probe(struct platform_device *pdev)
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_resume(struct device *dev)
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;