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crypto: replace scatterwalk_sg_next with sg_next

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Modify crypto drivers to use the generic SG helper since
both of them are equivalent and the one from crypto is redundant.

See also:
  468577abe3   reverted in
  b2ab4a57b0

Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Cristian Stoica 2015-01-20 10:06:16 +02:00 committed by Herbert Xu
parent 088f628cc0
commit 5be4d4c94b
15 changed files with 30 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
crypto/ablkcipher.c
View File

@ -87,8 +87,7 @@ static inline unsigned int ablkcipher_done_slow(struct ablkcipher_walk *walk,
if (n == len_this_page)
break;
n -= len_this_page;
scatterwalk_start(&walk->out, scatterwalk_sg_next(
walk->out.sg));
scatterwalk_start(&walk->out, sg_next(walk->out.sg));
}
return bsize;

2
crypto/ahash.c
View File

@ -121,7 +121,7 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err)
if (!walk->total)
return 0;
walk->sg = scatterwalk_sg_next(walk->sg);
walk->sg = sg_next(walk->sg);
return hash_walk_new_entry(walk);
}

6
crypto/scatterwalk.c
View File

@ -62,7 +62,7 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,
walk->offset += PAGE_SIZE - 1;
walk->offset &= PAGE_MASK;
if (walk->offset >= walk->sg->offset + walk->sg->length)
scatterwalk_start(walk, scatterwalk_sg_next(walk->sg));
scatterwalk_start(walk, sg_next(walk->sg));
}
}
@ -116,7 +116,7 @@ void scatterwalk_map_and_copy(void *buf, struct scatterlist *sg,
break;
offset += sg->length;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
scatterwalk_advance(&walk, start - offset);
@ -136,7 +136,7 @@ int scatterwalk_bytes_sglen(struct scatterlist *sg, int num_bytes)
do {
offset += sg->length;
n++;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
/* num_bytes is too large */
if (unlikely(!sg && (num_bytes < offset)))

2
drivers/crypto/bfin_crc.c
View File

@ -110,7 +110,7 @@ static int sg_count(struct scatterlist *sg_list)
while (!sg_is_last(sg)) {
sg_nents++;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return sg_nents;

8
drivers/crypto/caam/sg_sw_sec4.h
View File

@ -37,7 +37,7 @@ sg_to_sec4_sg(struct scatterlist *sg, int sg_count,
dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg),
sg_dma_len(sg), offset);
sec4_sg_ptr++;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
sg_count--;
}
return sec4_sg_ptr - 1;
@ -67,7 +67,7 @@ static inline int __sg_count(struct scatterlist *sg_list, int nbytes,
nbytes -= sg->length;
if (!sg_is_last(sg) && (sg + 1)->length == 0)
*chained = true;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return sg_nents;
@ -93,7 +93,7 @@ static int dma_map_sg_chained(struct device *dev, struct scatterlist *sg,
int i;
for (i = 0; i < nents; i++) {
dma_map_sg(dev, sg, 1, dir);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
} else {
dma_map_sg(dev, sg, nents, dir);
@ -109,7 +109,7 @@ static int dma_unmap_sg_chained(struct device *dev, struct scatterlist *sg,
int i;
for (i = 0; i < nents; i++) {
dma_unmap_sg(dev, sg, 1, dir);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
} else {
dma_unmap_sg(dev, sg, nents, dir);

4
drivers/crypto/ixp4xx_crypto.c
View File

@ -784,7 +784,7 @@ static struct buffer_desc *chainup_buffers(struct device *dev,
struct buffer_desc *buf, gfp_t flags,
enum dma_data_direction dir)
{
for (;nbytes > 0; sg = scatterwalk_sg_next(sg)) {
for (; nbytes > 0; sg = sg_next(sg)) {
unsigned len = min(nbytes, sg->length);
struct buffer_desc *next_buf;
u32 next_buf_phys;
@ -982,7 +982,7 @@ static int hmac_inconsistent(struct scatterlist *sg, unsigned start,
break;
offset += sg->length;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return (start + nbytes > offset + sg->length);
}

6
drivers/crypto/nx/nx.c
View File

@ -177,7 +177,7 @@ struct nx_sg *nx_walk_and_build(struct nx_sg *nx_dst,
break;
offset += sg_src->length;
sg_src = scatterwalk_sg_next(sg_src);
sg_src = sg_next(sg_src);
}
/* start - offset is the number of bytes to advance in the scatterlist
@ -187,9 +187,9 @@ struct nx_sg *nx_walk_and_build(struct nx_sg *nx_dst,
while (len && (nx_sg - nx_dst) < sglen) {
n = scatterwalk_clamp(&walk, len);
if (!n) {
/* In cases where we have scatterlist chain scatterwalk_sg_next
/* In cases where we have scatterlist chain sg_next
* handles with it properly */
scatterwalk_start(&walk, scatterwalk_sg_next(walk.sg));
scatterwalk_start(&walk, sg_next(walk.sg));
n = scatterwalk_clamp(&walk, len);
}
dst = scatterwalk_map(&walk);

4
drivers/crypto/omap-aes.c
View File

@ -994,7 +994,7 @@ static irqreturn_t omap_aes_irq(int irq, void *dev_id)
scatterwalk_advance(&dd->in_walk, 4);
if (dd->in_sg->length == _calc_walked(in)) {
dd->in_sg = scatterwalk_sg_next(dd->in_sg);
dd->in_sg = sg_next(dd->in_sg);
if (dd->in_sg) {
scatterwalk_start(&dd->in_walk,
dd->in_sg);
@ -1026,7 +1026,7 @@ static irqreturn_t omap_aes_irq(int irq, void *dev_id)
*dst = omap_aes_read(dd, AES_REG_DATA_N(dd, i));
scatterwalk_advance(&dd->out_walk, 4);
if (dd->out_sg->length == _calc_walked(out)) {
dd->out_sg = scatterwalk_sg_next(dd->out_sg);
dd->out_sg = sg_next(dd->out_sg);
if (dd->out_sg) {
scatterwalk_start(&dd->out_walk,
dd->out_sg);

4
drivers/crypto/omap-des.c
View File

@ -921,7 +921,7 @@ static irqreturn_t omap_des_irq(int irq, void *dev_id)
scatterwalk_advance(&dd->in_walk, 4);
if (dd->in_sg->length == _calc_walked(in)) {
dd->in_sg = scatterwalk_sg_next(dd->in_sg);
dd->in_sg = sg_next(dd->in_sg);
if (dd->in_sg) {
scatterwalk_start(&dd->in_walk,
dd->in_sg);
@ -953,7 +953,7 @@ static irqreturn_t omap_des_irq(int irq, void *dev_id)
*dst = omap_des_read(dd, DES_REG_DATA_N(dd, i));
scatterwalk_advance(&dd->out_walk, 4);
if (dd->out_sg->length == _calc_walked(out)) {
dd->out_sg = scatterwalk_sg_next(dd->out_sg);
dd->out_sg = sg_next(dd->out_sg);
if (dd->out_sg) {
scatterwalk_start(&dd->out_walk,
dd->out_sg);

6
drivers/crypto/qce/dma.c
View File

@ -64,7 +64,7 @@ int qce_mapsg(struct device *dev, struct scatterlist *sg, int nents,
err = dma_map_sg(dev, sg, 1, dir);
if (!err)
return -EFAULT;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
} else {
err = dma_map_sg(dev, sg, nents, dir);
@ -81,7 +81,7 @@ void qce_unmapsg(struct device *dev, struct scatterlist *sg, int nents,
if (chained)
while (sg) {
dma_unmap_sg(dev, sg, 1, dir);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
else
dma_unmap_sg(dev, sg, nents, dir);
@ -100,7 +100,7 @@ int qce_countsg(struct scatterlist *sglist, int nbytes, bool *chained)
nbytes -= sg->length;
if (!sg_is_last(sg) && (sg + 1)->length == 0 && chained)
*chained = true;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return nents;

2
drivers/crypto/qce/sha.c
View File

@ -285,7 +285,7 @@ static int qce_ahash_update(struct ahash_request *req)
break;
len += sg_dma_len(sg);
sg_last = sg;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
if (!sg_last)

2
drivers/crypto/sahara.c
View File

@ -940,7 +940,7 @@ static int sahara_walk_and_recalc(struct scatterlist *sg, unsigned int nbytes)
break;
}
nbytes -= sg->length;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return nbytes;

8
drivers/crypto/talitos.c
View File

@ -743,7 +743,7 @@ static int talitos_map_sg(struct device *dev, struct scatterlist *sg,
if (unlikely(chained))
while (sg) {
dma_map_sg(dev, sg, 1, dir);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
else
dma_map_sg(dev, sg, nents, dir);
@ -755,7 +755,7 @@ static void talitos_unmap_sg_chain(struct device *dev, struct scatterlist *sg,
{
while (sg) {
dma_unmap_sg(dev, sg, 1, dir);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
}
@ -915,7 +915,7 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
link_tbl_ptr->j_extent = 0;
link_tbl_ptr++;
cryptlen -= sg_dma_len(sg);
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
/* adjust (decrease) last one (or two) entry's len to cryptlen */
@ -1102,7 +1102,7 @@ static int sg_count(struct scatterlist *sg_list, int nbytes, bool *chained)
nbytes -= sg->length;
if (!sg_is_last(sg) && (sg + 1)->length == 0)
*chained = true;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
return sg_nents;

2
drivers/crypto/ux500/cryp/cryp_core.c
View File

@ -814,7 +814,7 @@ static int get_nents(struct scatterlist *sg, int nbytes)
while (nbytes > 0) {
nbytes -= sg->length;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
nents++;
}

10
include/crypto/scatterwalk.h
View File

@ -33,21 +33,13 @@ static inline void scatterwalk_sg_chain(struct scatterlist *sg1, int num,
sg1[num - 1].page_link |= 0x01;
}
static inline struct scatterlist *scatterwalk_sg_next(struct scatterlist *sg)
{
if (sg_is_last(sg))
return NULL;
return (++sg)->length ? sg : sg_chain_ptr(sg);
}
static inline void scatterwalk_crypto_chain(struct scatterlist *head,
struct scatterlist *sg,
int chain, int num)
{
if (chain) {
head->length += sg->length;
sg = scatterwalk_sg_next(sg);
sg = sg_next(sg);
}
if (sg)