From 11548f5a5747813ff84bed6f2ea01100053b0d8d Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Wed, 27 Nov 2019 13:01:36 +0100
Subject: [PATCH] crypto: ccp - set max RSA modulus size for v3 platform devices as well
Git-commit: 11548f5a5747813ff84bed6f2ea01100053b0d8d
Patch-mainline: v5.6-rc1
References: git-fixes

AMD Seattle incorporates a non-PCI version of the v3 CCP crypto
accelerator, and this version was left behind when the maximum
RSA modulus size was parameterized in order to support v5 hardware
which supports larger moduli than v3 hardware does. Due to this
oversight, RSA acceleration no longer works at all on these systems.

Fix this by setting the .rsamax property to the appropriate value
for v3 platform hardware.

Fixes: e28c190db66830c0 ("csrypto: ccp - Expand RSA support for a v5 ccp")
Cc: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/crypto/ccp/ccp-dev-v3.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c
index 0186b3df4c87..0d5576f6ad21 100644
--- a/drivers/crypto/ccp/ccp-dev-v3.c
+++ b/drivers/crypto/ccp/ccp-dev-v3.c
@@ -586,6 +586,7 @@ const struct ccp_vdata ccpv3_platform = {
 	.setup = NULL,
 	.perform = &ccp3_actions,
 	.offset = 0,
+	.rsamax = CCP_RSA_MAX_WIDTH,
 };
 
 const struct ccp_vdata ccpv3 = {
-- 
2.16.4