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crypto: sun4i-ss - simplify optional reset handling 

As of commit bb475230b8 ("reset: make optional functions really
optional"), the reset framework API calls use NULL pointers to describe
optional, non-present reset controls.

This allows to unconditionally return errors from
devm_reset_control_get_optional_exclusive.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Philipp Zabel 2021-03-05 10:12:36 +01:00 committed by Herbert Xu
parent e5f9f41d5e
commit aa31e559f7
1 changed files with 8 additions and 13 deletions
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21
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c
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@ -288,8 +288,7 @@ static int sun4i_ss_pm_suspend(struct device *dev)
{
struct sun4i_ss_ctx *ss = dev_get_drvdata(dev);
if (ss->reset)
reset_control_assert(ss->reset);
reset_control_assert(ss->reset);
clk_disable_unprepare(ss->ssclk);
clk_disable_unprepare(ss->busclk);
@ -314,12 +313,10 @@ static int sun4i_ss_pm_resume(struct device *dev)
goto err_enable;
}
if (ss->reset) {
err = reset_control_deassert(ss->reset);
if (err) {
dev_err(ss->dev, "Cannot deassert reset control\n");
goto err_enable;
}
err = reset_control_deassert(ss->reset);
if (err) {
dev_err(ss->dev, "Cannot deassert reset control\n");
goto err_enable;
}
return err;
@ -401,12 +398,10 @@ static int sun4i_ss_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "clock ahb_ss acquired\n");
ss->reset = devm_reset_control_get_optional(&pdev->dev, "ahb");
if (IS_ERR(ss->reset)) {
if (PTR_ERR(ss->reset) == -EPROBE_DEFER)
return PTR_ERR(ss->reset);
if (IS_ERR(ss->reset))
return PTR_ERR(ss->reset);
if (!ss->reset)
dev_info(&pdev->dev, "no reset control found\n");
ss->reset = NULL;
}
/*
* Check that clock have the correct rates given in the datasheet