[PATCH] crypto: caam/qi - execute library only on DPAA 1.x

[PATCH] crypto: caam/qi - execute library only on DPAA 1.x

[Horia Geantă]

In the process of turning caam/qi into a library, the check of
MCFGR[QI] bit has been inadvertently dropped.
Fix the condition for DPAA 1.x QI detection, which should be:
MCFGR[QI] && !MCFGR[DPAA2]

An identical check is added in the library exit point, even though
currently it's not strictly required (list of registered algorithms
being empty).

While here, silence the library initialization abort - since jr.c
calls it unconditionally.

Fixes: 1b46c90c8e00 ("crypto: caam - convert top level drivers to libraries")
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
---
 drivers/crypto/caam/caamalg_qi.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c
index 32f0f8a72067..c25479d2efa4 100644
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -2474,6 +2474,10 @@ void caam_qi_algapi_exit(void)
 {
 	int i;
 
+	/* Make sure this runs only on (DPAA 1.x) QI */
+	if (!priv->qi_present || caam_dpaa2)
+		return 0;
+
 	for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
 		struct caam_aead_alg *t_alg = driver_aeads + i;
 
@@ -2523,10 +2527,9 @@ int caam_qi_algapi_init(struct device *ctrldev)
 	unsigned int md_limit = SHA512_DIGEST_SIZE;
 	bool registered = false;
 
-	if (caam_dpaa2) {
-		dev_info(ctrldev, "caam/qi frontend driver not suitable for DPAA 2.x, aborting...\n");
-		return -ENODEV;
-	}
+	/* Make sure this runs only on (DPAA 1.x) QI */
+	if (!priv->qi_present || caam_dpaa2)
+		return 0;
 
 	/*
 	 * Register crypto algorithms the device supports.
-- 
2.17.1