From 5be4d4c94b1f98b839344fda7a8752a4a09d0ef5 Mon Sep 17 00:00:00 2001 From: Cristian Stoica Date: Tue, 20 Jan 2015 10:06:16 +0200 Subject: [PATCH] crypto: replace scatterwalk_sg_next with sg_next Modify crypto drivers to use the generic SG helper since both of them are equivalent and the one from crypto is redundant. See also: 468577abe37ff7b453a9ac613e0ea155349203ae reverted in b2ab4a57b018aafbba35bff088218f5cc3d2142e Signed-off-by: Cristian Stoica Signed-off-by: Herbert Xu --- crypto/ablkcipher.c | 3 +-- crypto/ahash.c | 2 +- crypto/scatterwalk.c | 6 +++--- drivers/crypto/bfin_crc.c | 2 +- drivers/crypto/caam/sg_sw_sec4.h | 8 ++++---- drivers/crypto/ixp4xx_crypto.c | 4 ++-- drivers/crypto/nx/nx.c | 6 +++--- drivers/crypto/omap-aes.c | 4 ++-- drivers/crypto/omap-des.c | 4 ++-- drivers/crypto/qce/dma.c | 6 +++--- drivers/crypto/qce/sha.c | 2 +- drivers/crypto/sahara.c | 2 +- drivers/crypto/talitos.c | 8 ++++---- drivers/crypto/ux500/cryp/cryp_core.c | 2 +- include/crypto/scatterwalk.h | 10 +--------- 15 files changed, 30 insertions(+), 39 deletions(-) diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c index 7bbc8b4ef2e9..db201bca1581 100644 --- a/crypto/ablkcipher.c +++ b/crypto/ablkcipher.c @@ -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; diff --git a/crypto/ahash.c b/crypto/ahash.c index dd2890608aeb..8acb886032ae 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -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); } diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c index 79ca2278c2a3..3bd749c7bb70 100644 --- a/crypto/scatterwalk.c +++ b/crypto/scatterwalk.c @@ -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))) diff --git a/drivers/crypto/bfin_crc.c b/drivers/crypto/bfin_crc.c index 33cf9eb87344..d9af9403ab6c 100644 --- a/drivers/crypto/bfin_crc.c +++ b/drivers/crypto/bfin_crc.c @@ -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; diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index ce28a563effc..3b918218aa4c 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -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); diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index f757a0f428bd..48f453555f1f 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -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); } diff --git a/drivers/crypto/nx/nx.c b/drivers/crypto/nx/nx.c index a392465d3e3f..1da6dc59d0dd 100644 --- a/drivers/crypto/nx/nx.c +++ b/drivers/crypto/nx/nx.c @@ -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); diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index f79dd410dede..42f95a4326b0 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -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); diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 0b8dcf5eb74e..46307098f8ba 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -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); diff --git a/drivers/crypto/qce/dma.c b/drivers/crypto/qce/dma.c index 0fb21e13f247..378cb768647f 100644 --- a/drivers/crypto/qce/dma.c +++ b/drivers/crypto/qce/dma.c @@ -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; diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c index f3385934eed2..5c5df1d17f90 100644 --- a/drivers/crypto/qce/sha.c +++ b/drivers/crypto/qce/sha.c @@ -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) diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index 220b92f7eabc..290a7f0a681f 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -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; diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 067ec2193d71..ebbae8d3ce0d 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -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; diff --git a/drivers/crypto/ux500/cryp/cryp_core.c b/drivers/crypto/ux500/cryp/cryp_core.c index f087f37b2c67..d594ae962ed2 100644 --- a/drivers/crypto/ux500/cryp/cryp_core.c +++ b/drivers/crypto/ux500/cryp/cryp_core.c @@ -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++; } diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h index 7ef512f8631c..20e4226a2e14 100644 --- a/include/crypto/scatterwalk.h +++ b/include/crypto/scatterwalk.h @@ -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)