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crypto: ccree - HOST_POWER_DOWN_EN should be the last CC access during suspend

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During power management suspend the driver need to prepare the device
for the power down operation and as a last indication write to the
HOST_POWER_DOWN_EN register which signals to the hardware that
The ccree is ready for power down.

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>
This commit is contained in:
Ofir Drang 2019-04-18 16:39:08 +03:00 committed by Herbert Xu
parent 1fc165721b
commit 3499efbeed
1 changed files with 1 additions and 1 deletions
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2
drivers/crypto/ccree/cc_pm.c
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@ -25,13 +25,13 @@ int cc_pm_suspend(struct device *dev)
int rc;
dev_dbg(dev, "set HOST_POWER_DOWN_EN\n");
cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_ENABLE);
rc = cc_suspend_req_queue(drvdata);
if (rc) {
dev_err(dev, "cc_suspend_req_queue (%x)\n", rc);
return rc;
}
fini_cc_regs(drvdata);
cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_ENABLE);
cc_clk_off(drvdata);
return 0;
}