Linux 4.19.45

[thirdparty/kernel/stable-queue.git] / releases / 4.19.45 / crypto-ccree-handle-tee-fips-error-during-power-management-resume.patch

From 7138377ce10455b7183c6dde4b2c51b33f464c45 Mon Sep 17 00:00:00 2001
From: Ofir Drang <ofir.drang@arm.com>
Date: Thu, 18 Apr 2019 16:39:10 +0300
Subject: crypto: ccree - handle tee fips error during power management resume

From: Ofir Drang <ofir.drang@arm.com>

commit 7138377ce10455b7183c6dde4b2c51b33f464c45 upstream.

in order to support cryptocell tee fips error that may occurs while
cryptocell ree is suspended, an cc_tee_handle_fips_error  call added
to the cc_pm_resume function.

Signed-off-by: Ofir Drang <ofir.drang@arm.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/ccree/cc_pm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/crypto/ccree/cc_pm.c
+++ b/drivers/crypto/ccree/cc_pm.c
@@ -11,6 +11,7 @@
 #include "cc_ivgen.h"
 #include "cc_hash.h"
 #include "cc_pm.h"
+#include "cc_fips.h"
 
 #define POWER_DOWN_ENABLE 0x01
 #define POWER_DOWN_DISABLE 0x00
@@ -50,12 +51,13 @@ int cc_pm_resume(struct device *dev)
 	}
 
 	cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE);
-
 	rc = init_cc_regs(drvdata, false);
 	if (rc) {
 		dev_err(dev, "init_cc_regs (%x)\n", rc);
 		return rc;
 	}
+	/* check if tee fips error occurred during power down */
+	cc_tee_handle_fips_error(drvdata);
 
 	rc = cc_resume_req_queue(drvdata);
 	if (rc) {