diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2020-12-19 08:52:07 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-01-03 08:41:37 +1100 |
| commit | c4ff41b93d1f10d1b8be258c31a0436c5769fc00 (patch) | |
| tree | c68dfb2d9fefacfd7c7265b229c47ee075170c6c /drivers/char | |
| parent | 256693a36203f51b0a3659c8b215a7026a03a3f1 (diff) | |
hwrng: ingenic - Fix a resource leak in an error handling path
In case of error, we should call 'clk_disable_unprepare()' to undo a
previous 'clk_prepare_enable()' call, as already done in the remove
function.
Fixes: 406346d22278 ("hwrng: ingenic - Add hardware TRNG for Ingenic X1830")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Tested-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/ingenic-trng.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/char/hw_random/ingenic-trng.c b/drivers/char/hw_random/ingenic-trng.c index 954a8411d67d..0eb80f786f4d 100644 --- a/drivers/char/hw_random/ingenic-trng.c +++ b/drivers/char/hw_random/ingenic-trng.c @@ -113,13 +113,17 @@ static int ingenic_trng_probe(struct platform_device *pdev) ret = hwrng_register(&trng->rng); if (ret) { dev_err(&pdev->dev, "Failed to register hwrng\n"); - return ret; + goto err_unprepare_clk; } platform_set_drvdata(pdev, trng); dev_info(&pdev->dev, "Ingenic DTRNG driver registered\n"); return 0; + +err_unprepare_clk: + clk_disable_unprepare(trng->clk); + return ret; } static int ingenic_trng_remove(struct platform_device *pdev) |