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Subject[PATCH 35/35] crypto: ccree: handle tee fips error during power management resume
Date
From: Ofir Drang <ofir.drang@arm.com>

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

diff --git a/drivers/crypto/ccree/cc_pm.c b/drivers/crypto/ccree/cc_pm.c
index 77025da2dcb6..2dad9c9543c6 100644
--- 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) {
--
2.21.0
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