diff options
| author | Ofir Drang <ofir.drang@arm.com> | 2019-04-18 16:39:06 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-22 08:39:49 +0300 |
| commit | d034d2a1e2e2e8459ae60e4fe3b33b04d4ad1799 (patch) | |
| tree | 857b4dfee81dbae8885bc44b6563f3893952ef69 /drivers | |
| parent | 9c883c19c888f0f59f15d99aed0cdb04aaea7713 (diff) | |
| download | linux-d034d2a1e2e2e8459ae60e4fe3b33b04d4ad1799.tar.xz | |
crypto: ccree - pm resume first enable the source clk
commit 7766dd774d80463cec7b81d90c8672af91de2da1 upstream.
On power management resume function first enable the device clk source
to allow access to the device registers.
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/ccree/cc_pm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/ccree/cc_pm.c b/drivers/crypto/ccree/cc_pm.c index 6ff7e75ad90e..03bbfdf461de 100644 --- a/drivers/crypto/ccree/cc_pm.c +++ b/drivers/crypto/ccree/cc_pm.c @@ -42,14 +42,15 @@ int cc_pm_resume(struct device *dev) struct cc_drvdata *drvdata = dev_get_drvdata(dev); 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); if (rc) { dev_err(dev, "failed getting clock back on. We're toast.\n"); return rc; } + 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); |