This is a note to let you know that I've just added the patch titled
crypto: omap-sham - fix digcnt register handling with export/import
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-omap-sham-fix-digcnt-register-handling-with-e.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d8a0ee6486111f3b97dbb781fba97fa66f4787c9
Author: Tero Kristo <t-kristo@xxxxxx>
Date: Mon Sep 7 10:56:24 2020 +0300
crypto: omap-sham - fix digcnt register handling with export/import
[ Upstream commit 3faf757bad75f3fc1b2736f0431e295a073a7423 ]
Running export/import for hashes in peculiar order (mostly done by
openssl) can mess up the internal book keeping of the OMAP SHA core.
Fix by forcibly writing the correct DIGCNT back to hardware. This issue
was noticed while transitioning to openssl 1.1 support.
Fixes: 0d373d603202 ("crypto: omap-sham - Add OMAP4/AM33XX SHAM Support")
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 2faaa4069cdd8..4d31ef4724366 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -456,6 +456,9 @@ static void omap_sham_write_ctrl_omap4(struct omap_sham_dev *dd, size_t length,
struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req);
u32 val, mask;
+ if (likely(ctx->digcnt))
+ omap_sham_write(dd, SHA_REG_DIGCNT(dd), ctx->digcnt);
+
/*
* Setting ALGO_CONST only for the first iteration and
* CLOSE_HASH only for the last one. Note that flags mode bits
