linux-kernel - [PATCH 1/4] crypto: ccp - Fix SEV

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Message-Id: <20211028175749.1219188-2-pgonda@google.com>
Date:   Thu, 28 Oct 2021 10:57:46 -0700
From:   Peter Gonda <pgonda@...gle.com>
To:     thomas.lendacky@....com
Cc:     Peter Gonda <pgonda@...gle.com>,
        David Rientjes <rientjes@...gle.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Marc Orr <marcorr@...gle.com>, Joerg Roedel <jroedel@...e.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        John Allen <john.allen@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Bonzini <pbonzini@...hat.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] crypto: ccp - Fix SEV_INIT error logging on init

Currently only the firmware error code is printed. This is incomplete
and also incorrect as error cases exists where the firmware is never
called and therefore does not set an error code. This change zeros the
firmware error code in case the call does not get that far and prints
the return code for non firmware errors.

Signed-off-by: Peter Gonda <pgonda@...gle.com>
Acked-by: David Rientjes <rientjes@...gle.com>
Cc: Tom Lendacky <thomas.lendacky@....com>
Cc: Brijesh Singh <brijesh.singh@....com>
Cc: Marc Orr <marcorr@...gle.com>
Cc: Joerg Roedel <jroedel@...e.de>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: David Rientjes <rientjes@...gle.com>
Cc: John Allen <john.allen@....com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Paolo Bonzini <pbonzini@...hat.com> (
Cc: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/crypto/ccp/sev-dev.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index 2ecb0e1f65d8..ec89a82ba267 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -1065,7 +1065,7 @@ void sev_pci_init(void)
 {
 	struct sev_device *sev = psp_master->sev_data;
 	struct page *tmr_page;
-	int error, rc;
+	int error = 0, rc;
 
 	if (!sev)
 		return;
@@ -1104,7 +1104,8 @@ void sev_pci_init(void)
 	}
 
 	if (rc) {
-		dev_err(sev->dev, "SEV: failed to INIT error %#x\n", error);
+		dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n",
+			error, rc);
 		return;
 	}
 
-- 
2.33.1.1089.g2158813163f-goog