staging: ccree: fix buffer copy

Fix a bug where the copying of scatterlist buffers incorrectly
ignored bytes to skip in a scatterlist and ended 1 byte short.

This fixes testmgr hmac and hash test failures currently obscured
by hash import/export not being supported.

Fixes: abefd6741d ("staging: ccree: introduce CryptoCell HW driver").

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c
index 038e2ff5e545..6471d3d2d375 100644
--- a/drivers/staging/ccree/ssi_buffer_mgr.c
+++ b/drivers/staging/ccree/ssi_buffer_mgr.c
@@ -216,7 +216,8 @@ void ssi_buffer_mgr_copy_scatterlist_portion(
         uint32_t nents, lbytes;
 
         nents = ssi_buffer_mgr_get_sgl_nents(sg, end, &lbytes, NULL);
-        sg_copy_buffer(sg, nents, (void *)dest, (end - to_skip), 0, (direct == SSI_SG_TO_BUF));
+        sg_copy_buffer(sg, nents, (void *)dest, (end - to_skip + 1), to_skip,
+                       (direct == SSI_SG_TO_BUF));
 }
 
 static inline int ssi_buffer_mgr_render_buff_to_mlli(