Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
crypto: scatterwalk - remove obsolete functions
Remove various functions that are no longer used.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
authored by
Eric Biggers
and committed by
Herbert Xu
fa94e454
95dbd711
-62
-37
crypto/scatterwalk.c
-37
crypto/scatterwalk.c
···
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}
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EXPORT_SYMBOL_GPL(scatterwalk_skip);
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static inline void memcpy_dir(void *buf, void *sgdata, size_t nbytes, int out)
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{
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void *src = out ? buf : sgdata;
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void *dst = out ? sgdata : buf;
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memcpy(dst, src, nbytes);
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}
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void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
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size_t nbytes, int out)
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{
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for (;;) {
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unsigned int len_this_page = scatterwalk_pagelen(walk);
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u8 *vaddr;
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if (len_this_page > nbytes)
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len_this_page = nbytes;
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if (out != 2) {
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vaddr = scatterwalk_map(walk);
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memcpy_dir(buf, vaddr, len_this_page, out);
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scatterwalk_unmap(vaddr);
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}
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scatterwalk_advance(walk, len_this_page);
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if (nbytes == len_this_page)
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break;
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buf += len_this_page;
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nbytes -= len_this_page;
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scatterwalk_pagedone(walk, out & 1, 1);
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}
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}
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EXPORT_SYMBOL_GPL(scatterwalk_copychunks);
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inline void memcpy_from_scatterwalk(void *buf, struct scatter_walk *walk,
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unsigned int nbytes)
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{
-25
include/crypto/scatterwalk.h
-25
include/crypto/scatterwalk.h
···
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return scatterwalk_map(walk);
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}
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static inline void scatterwalk_pagedone(struct scatter_walk *walk, int out,
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unsigned int more)
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{
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if (out) {
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struct page *page;
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page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);
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flush_dcache_page(page);
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}
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if (more && walk->offset >= walk->sg->offset + walk->sg->length)
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scatterwalk_start(walk, sg_next(walk->sg));
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}
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static inline void scatterwalk_done(struct scatter_walk *walk, int out,
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int more)
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{
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if (!more || walk->offset >= walk->sg->offset + walk->sg->length ||
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!(walk->offset & (PAGE_SIZE - 1)))
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scatterwalk_pagedone(walk, out, more);
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}
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static inline void scatterwalk_advance(struct scatter_walk *walk,
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unsigned int nbytes)
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{
···
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}
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void scatterwalk_skip(struct scatter_walk *walk, unsigned int nbytes);
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void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
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size_t nbytes, int out);
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void memcpy_from_scatterwalk(void *buf, struct scatter_walk *walk,
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unsigned int nbytes);