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Commit 4bdf1cfc authored by Nicolai Stange's avatar Nicolai Stange Committed by Herbert Xu
Browse files

lib/mpi: purge mpi_set_buffer() 



mpi_set_buffer() has no in-tree users and similar functionality is provided
by mpi_read_raw_data().

Remove mpi_set_buffer().

Signed-off-by: default avatarNicolai Stange <nicstange@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1ff69adf

include/linux/mpi.h

+0 −1
Original line number Diff line number Diff line
@@ -80,7 +80,6 @@ void *mpi_get_buffer(MPI a, unsigned *nbytes, int *sign); 
int mpi_read_buffer(MPI a, uint8_t *buf, unsigned buf_len, unsigned *nbytes,

		    int *sign);

void *mpi_get_secure_buffer(MPI a, unsigned *nbytes, int *sign);

int mpi_set_buffer(MPI a, const void *buffer, unsigned nbytes, int sign);

int mpi_write_to_sgl(MPI a, struct scatterlist *sg, unsigned *nbytes,

		     int *sign);

lib/mpi/mpicoder.c

+0 −76
Original line number Diff line number Diff line
@@ -250,82 +250,6 @@ void *mpi_get_buffer(MPI a, unsigned *nbytes, int *sign) 
}

EXPORT_SYMBOL_GPL(mpi_get_buffer);



/****************

 * Use BUFFER to update MPI.

 */

int mpi_set_buffer(MPI a, const void *xbuffer, unsigned nbytes, int sign)

{

	const uint8_t *buffer = xbuffer, *p;

	mpi_limb_t alimb;

	int nlimbs;

	int i;



	nlimbs = DIV_ROUND_UP(nbytes, BYTES_PER_MPI_LIMB);

	if (RESIZE_IF_NEEDED(a, nlimbs) < 0)

		return -ENOMEM;

	a->sign = sign;



	for (i = 0, p = buffer + nbytes - 1; p >= buffer + BYTES_PER_MPI_LIMB;) {

#if BYTES_PER_MPI_LIMB == 4

		alimb = (mpi_limb_t) *p--;

		alimb |= (mpi_limb_t) *p-- << 8;

		alimb |= (mpi_limb_t) *p-- << 16;

		alimb |= (mpi_limb_t) *p-- << 24;

#elif BYTES_PER_MPI_LIMB == 8

		alimb = (mpi_limb_t) *p--;

		alimb |= (mpi_limb_t) *p-- << 8;

		alimb |= (mpi_limb_t) *p-- << 16;

		alimb |= (mpi_limb_t) *p-- << 24;

		alimb |= (mpi_limb_t) *p-- << 32;

		alimb |= (mpi_limb_t) *p-- << 40;

		alimb |= (mpi_limb_t) *p-- << 48;

		alimb |= (mpi_limb_t) *p-- << 56;

#else

#error please implement for this limb size.

#endif

		a->d[i++] = alimb;

	}

	if (p >= buffer) {

#if BYTES_PER_MPI_LIMB == 4

		alimb = *p--;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 8;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 16;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 24;

#elif BYTES_PER_MPI_LIMB == 8

		alimb = (mpi_limb_t) *p--;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 8;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 16;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 24;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 32;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 40;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 48;

		if (p >= buffer)

			alimb |= (mpi_limb_t) *p-- << 56;

#else

#error please implement for this limb size.

#endif

		a->d[i++] = alimb;

	}

	a->nlimbs = i;



	if (i != nlimbs) {

		pr_emerg("MPI: mpi_set_buffer: Assertion failed (%d != %d)", i,

		       nlimbs);

		BUG();

	}

	return 0;

}

EXPORT_SYMBOL_GPL(mpi_set_buffer);



/**

 * mpi_write_to_sgl() - Funnction exports MPI to an sgl (msb first)

 *