Commit 654842ef authored Mar 22, 2016 by Nicolai Stange Committed by Herbert Xu Apr 05, 2016

lib/mpi: mpi_write_sgl(): fix style issue with lzero decrement



Within the copying loop in mpi_write_sgl(), we have

  if (lzeros > 0) {
    ...
    lzeros -= sizeof(alimb);
  }

However, at this point, lzeros < sizeof(alimb) holds. Make this fact
explicit by rewriting the above to

  if (lzeros) {
    ...
    lzeros = 0;
  }

Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent f2d1362f

lib/mpi/mpicoder.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -402,14 +402,14 @@ int mpi_write_to_sgl(MPI a, struct scatterlist sgl, unsigned nbytes,
		#else
		#error please implement for this limb size.
		#endif
		if (lzeros > 0) {
		if (lzeros) {
		mpi_limb_t limb1 = (void )p - sizeof(alimb);
		mpi_limb_t limb2 = (void )p - sizeof(alimb)
		+ lzeros;
		limb1 = limb2;
		p -= lzeros;
		y = lzeros;
		lzeros -= sizeof(alimb);
		lzeros = 0;
		}

		p = p - (sizeof(alimb) - y);