linux-kernel - Re: [PATCH] crypto: ccree - fix runtime PM imbalance on error

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Message-ID: <20200828071940.GC28064@gondor.apana.org.au>
Date:   Fri, 28 Aug 2020 17:19:40 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     dinghao.liu@....edu.cn
Cc:     kjlu@....edu, Gilad Ben-Yossef <gilad@...yossef.com>,
        "David S. Miller" <davem@...emloft.net>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: ccree - fix runtime PM imbalance on error

On Fri, Aug 21, 2020 at 04:15:13PM +0800, dinghao.liu@....edu.cn wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter
> even when it returns an error code. However, users of cc_pm_get(),
> a direct wrapper of pm_runtime_get_sync(), assume that PM usage
> counter will not change on error. Thus a pairing decrement is needed
> on the error handling path to keep the counter balanced.
> 
> Fixes: 8c7849a30255c ("crypto: ccree - simplify Runtime PM handling")
> Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
> ---
>  drivers/crypto/ccree/cc_pm.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt