From: Ofir Drang ofir.drang@arm.com
commit 3499efbeed39d114873267683b9e776bcb34b058 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/crypto/ccree/cc_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/crypto/ccree/cc_pm.c +++ b/drivers/crypto/ccree/cc_pm.c @@ -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; }