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| author | Łukasz Stelmach <l.stelmach@samsung.com> | 2021-05-05 20:29:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 16:53:11 +0200 |
| commit | f4c8a00d61fef36f598857d6db40b3855161a41e (patch) | |
| tree | 3c0477aaf266170ab344cef832577c68511b2363 /drivers/char | |
| parent | 022cf057e4432f8f32717ae1edfcc37e8c1a915e (diff) | |
| download | linux-f4c8a00d61fef36f598857d6db40b3855161a41e.tar.gz linux-f4c8a00d61fef36f598857d6db40b3855161a41e.tar.bz2 linux-f4c8a00d61fef36f598857d6db40b3855161a41e.zip | |
hwrng: exynos - Fix runtime PM imbalance on error
[ Upstream commit 0cdbabf8bb7a6147f5adf37dbc251e92a1bbc2c7 ]
pm_runtime_resume_and_get() wraps around pm_runtime_get_sync() and
decrements the runtime PM usage counter in case the latter function
fails and keeps the counter balanced.
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/exynos-trng.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c index b4b52ab23b6b..b4e931dbff66 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -134,7 +134,7 @@ static int exynos_trng_probe(struct platform_device *pdev) return PTR_ERR(trng->mem); pm_runtime_enable(&pdev->dev); - ret = pm_runtime_get_sync(&pdev->dev); + ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "Could not get runtime PM.\n"); goto err_pm_get; @@ -167,7 +167,7 @@ err_register: clk_disable_unprepare(trng->clk); err_clock: - pm_runtime_put_sync(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); err_pm_get: pm_runtime_disable(&pdev->dev); |