From: Vutla, Lokesh Date: Thu, 2 Apr 2015 10:02:45 +0000 (+0530) Subject: crypto: omap-sham - Add the offset of sg page to vaddr X-Git-Tag: firefly_0821_release~176^2~1973^2~39 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=13cf394c8c79b5655cdc76f7ae0d9869a1434103;p=firefly-linux-kernel-4.4.55.git crypto: omap-sham - Add the offset of sg page to vaddr kmap_atomic() gives only the page address of the input page. Driver should take care of adding the offset of the scatterlist within the page to the returned page address. omap-sham driver is not adding the offset to page and directly operates on the return vale of kmap_atomic(), because of which the following error comes when running crypto tests: 00000000: d9 a1 1b 7c aa 90 3b aa 11 ab cb 25 00 b8 ac bf [ 2.338169] 00000010: c1 39 cd ff 48 d0 a8 e2 2b fa 33 a1 [ 2.344008] alg: hash: Chunking test 1 failed for omap-sha256 So adding the scatterlist offset to vaddr. Signed-off-by: Lokesh Vutla Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 21fd515068c5..4d63e0d4da9a 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -640,6 +640,7 @@ static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx) while (ctx->sg) { vaddr = kmap_atomic(sg_page(ctx->sg)); + vaddr += ctx->sg->offset; count = omap_sham_append_buffer(ctx, vaddr + ctx->offset,