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SubjectRe: [PATCH]crypto:hifn_795x.c Fix warning: variable 'ctx' set but not used
Justin P. Mattock <justinmattock@gmail.com> wrote:
> The below fixes a warning message generated by GCC
> CC [M] drivers/crypto/hifn_795x.o
> drivers/crypto/hifn_795x.c: In function 'hifn_flush':
> drivers/crypto/hifn_795x.c:2021:23: warning: variable 'ctx' set but not used
> drivers/crypto/hifn_795x.c: In function 'hifn_process_queue':
> drivers/crypto/hifn_795x.c:2142:23: warning: variable 'ctx' set but not used
>
> Please have a look, and let me know if this is legit or not.
>
> Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
> drivers/crypto/hifn_795x.c | 10 ++++++++++
> 1 files changed, 10 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
> index 16fce3a..e7aa4dc 100644
> --- a/drivers/crypto/hifn_795x.c
> +++ b/drivers/crypto/hifn_795x.c
> @@ -2036,6 +2036,11 @@ static void hifn_flush(struct hifn_device *dev)
> spin_lock_irqsave(&dev->lock, flags);
> while ((async_req = crypto_dequeue_request(&dev->queue))) {
> ctx = crypto_tfm_ctx(async_req->tfm);
> + if (ctx) {
> + dprintk("%s: Flushing shash. %s\n",
> + dev->name, ctx);
> + return;
> + }

This certainly does not look right! Returning with IRQs disabled
is considered to be rude.

I believe the right answer is to delete the line initialising ctx.

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


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