crypto: qce - Make clocks optional

On certain Snapdragon processors, the crypto engine clocks are enabled by
default by security firmware and the driver should not handle the clocks.
Make acquiring of all the clocks optional in crypto engine driver, so that
the driver initializes properly even if no clocks are specified in the dt.

Tested-by: Jordan Crouse <jorcrous@amazon.com>
Signed-off-by: Thara Gopinath <thara.gopinath@gmail.com>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
[Bhupesh: Massage the commit log]
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
index 0654b94cfb953df7cb99478b5b0af9251002fe7e..5bb2128c95caa822818a0cf515d2ed27fdfafe9c 100644 (file)
--- a/drivers/crypto/qce/core.c
+++ b/drivers/crypto/qce/core.c
@@ -209,15 +209,15 @@ static int qce_crypto_probe(struct platform_device *pdev)
        if (ret < 0)
                return ret;
 
-       qce->core = devm_clk_get(qce->dev, "core");
+       qce->core = devm_clk_get_optional(qce->dev, "core");
        if (IS_ERR(qce->core))
                return PTR_ERR(qce->core);
 
-       qce->iface = devm_clk_get(qce->dev, "iface");
+       qce->iface = devm_clk_get_optional(qce->dev, "iface");
        if (IS_ERR(qce->iface))
                return PTR_ERR(qce->iface);
 
-       qce->bus = devm_clk_get(qce->dev, "bus");
+       qce->bus = devm_clk_get_optional(qce->dev, "bus");
        if (IS_ERR(qce->bus))
                return PTR_ERR(qce->bus);