On Wed, Jun 29, 2016 at 10:05:53AM -0700, H. Peter Anvin wrote:
> On 06/29/16 07:42, Dan Carpenter wrote:
> > || and | behave basically the same here but || is intended. It causes a
> > static checker warning to mix up bitwise and logical operations.
> >
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> >
> > diff --git a/arch/x86/crypto/sha256-mb/sha256_mb.c b/arch/x86/crypto/sha256-mb/sha256_mb.c
> > index c9d5dcc..4ec895a 100644
> > --- a/arch/x86/crypto/sha256-mb/sha256_mb.c
> > +++ b/arch/x86/crypto/sha256-mb/sha256_mb.c
> > @@ -299,7 +299,7 @@ static struct sha256_hash_ctx *sha256_ctx_mgr_submit(struct sha256_ctx_mgr *mgr,
> > * Or if the user's buffer contains less than a whole block,
> > * append as much as possible to the extra block.
> > */
> > - if ((ctx->partial_block_buffer_length) | (len < SHA256_BLOCK_SIZE)) {
> > + if ((ctx->partial_block_buffer_length) || (len < SHA256_BLOCK_SIZE)) {
> > /* Compute how many bytes to copy from user buffer into
> > * extra block
> > */
> >
>
> As far as I know the | was an intentional optimization, so you may way
> to look at the generated code.
I know how the rules work. I just thought it looked more like a typo
than an optimization. It's normally a typo. It's hard to tell the
intent.
I think I'll modify my static checker to ignore these since the typo is
harmless.
regards,
dan carpenter
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