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Revert "crypto: talitos - convert to use be16_add_cpu()"

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commit 69d9cd8c59 upstream.

This reverts commit 7291a932c6.

The conversion to be16_add_cpu() is incorrect in case cryptlen is
negative due to premature (i.e. before addition / subtraction)
implicit conversion of cryptlen (int -> u16) leading to sign loss.

Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Horia Geant?
2015-05-11 20:04:49 +03:00
committed by Greg Kroah-Hartman
parent 54b915793f
commit fd2db9b79c
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/talitos.c
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@@ -935,7 +935,8 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
sg_count--;
link_tbl_ptr--;
}
be16_add_cpu(&link_tbl_ptr->len, cryptlen);
link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
+ cryptlen);
/* tag end of link table */
link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;