Commit d034d2a1 authored by Ofir Drang's avatar Ofir Drang Committed by Greg Kroah-Hartman

crypto: ccree - pm resume first enable the source clk

commit 7766dd77 upstream.

On power management resume function first enable the device clk source
to allow access to the device registers.
Signed-off-by: default avatarOfir Drang <ofir.drang@arm.com>
Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9c883c19
...@@ -42,14 +42,15 @@ int cc_pm_resume(struct device *dev) ...@@ -42,14 +42,15 @@ int cc_pm_resume(struct device *dev)
struct cc_drvdata *drvdata = dev_get_drvdata(dev); struct cc_drvdata *drvdata = dev_get_drvdata(dev);
dev_dbg(dev, "unset HOST_POWER_DOWN_EN\n"); dev_dbg(dev, "unset HOST_POWER_DOWN_EN\n");
cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE); /* Enables the device source clk */
rc = cc_clk_on(drvdata); rc = cc_clk_on(drvdata);
if (rc) { if (rc) {
dev_err(dev, "failed getting clock back on. We're toast.\n"); dev_err(dev, "failed getting clock back on. We're toast.\n");
return rc; return rc;
} }
cc_iowrite(drvdata, CC_REG(HOST_POWER_DOWN_EN), POWER_DOWN_DISABLE);
rc = init_cc_regs(drvdata, false); rc = init_cc_regs(drvdata, false);
if (rc) { if (rc) {
dev_err(dev, "init_cc_regs (%x)\n", rc); dev_err(dev, "init_cc_regs (%x)\n", rc);
......
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