crypto: caam - fix return code in completion callbacks

Modify drive to provide a valid errno (and not the HW error ID)
to the user, via completion callbacks.

A "valid errno" is currently not explicitly mentioned in the docs,
however the error code is expected to match the one returned by the
generic SW implementation.

Note: in most error cases caam/qi and caam/qi2 returned -EIO; align all
caam drivers to return -EINVAL.

While here, ratelimit prints triggered by fuzz testing, such that
console is not flooded.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 12 insertions, 14 deletions

diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 43f18253e5b6..06b4f2d47be4 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -930,19 +930,20 @@ static void aead_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
 {
 	struct aead_request *req = context;
 	struct aead_edesc *edesc;
+	int ecode = 0;
 
 	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
 
 	edesc = container_of(desc, struct aead_edesc, hw_desc[0]);
 
 	if (err)
-		caam_jr_strstatus(jrdev, err);
+		ecode = caam_jr_strstatus(jrdev, err);
 
 	aead_unmap(jrdev, edesc, req);
 
 	kfree(edesc);
 
-	aead_request_complete(req, err);
+	aead_request_complete(req, ecode);
 }
 
 static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
@@ -950,25 +951,20 @@ static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
 {
 	struct aead_request *req = context;
 	struct aead_edesc *edesc;
+	int ecode = 0;
 
 	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
 
 	edesc = container_of(desc, struct aead_edesc, hw_desc[0]);
 
 	if (err)
-		caam_jr_strstatus(jrdev, err);
+		ecode = caam_jr_strstatus(jrdev, err);
 
 	aead_unmap(jrdev, edesc, req);
 
-	/*
-	 * verify hw auth check passed else return -EBADMSG
-	 */
-	if ((err & JRSTA_CCBERR_ERRID_MASK) == JRSTA_CCBERR_ERRID_ICVCHK)
-		err = -EBADMSG;
-
 	kfree(edesc);
 
-	aead_request_complete(req, err);
+	aead_request_complete(req, ecode);
 }
 
 static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
@@ -978,13 +974,14 @@ static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
 	struct skcipher_edesc *edesc;
 	struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
 	int ivsize = crypto_skcipher_ivsize(skcipher);
+	int ecode = 0;
 
 	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
 
 	edesc = container_of(desc, struct skcipher_edesc, hw_desc[0]);
 
 	if (err)
-		caam_jr_strstatus(jrdev, err);
+		ecode = caam_jr_strstatus(jrdev, err);
 
 	skcipher_unmap(jrdev, edesc, req);
 
@@ -1008,7 +1005,7 @@ static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
 
 	kfree(edesc);
 
-	skcipher_request_complete(req, err);
+	skcipher_request_complete(req, ecode);
 }
 
 static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
@@ -1018,12 +1015,13 @@ static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
 	struct skcipher_edesc *edesc;
 	struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
 	int ivsize = crypto_skcipher_ivsize(skcipher);
+	int ecode = 0;
 
 	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
 
 	edesc = container_of(desc, struct skcipher_edesc, hw_desc[0]);
 	if (err)
-		caam_jr_strstatus(jrdev, err);
+		ecode = caam_jr_strstatus(jrdev, err);
 
 	skcipher_unmap(jrdev, edesc, req);
 
@@ -1047,7 +1045,7 @@ static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
 
 	kfree(edesc);
 
-	skcipher_request_complete(req, err);
+	skcipher_request_complete(req, ecode);
 }
 
 /*