From aa31e559f7f9267cc65ac7029bdf19b5b3635eaf Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 5 Mar 2021 10:12:36 +0100 Subject: [PATCH] crypto: sun4i-ss - simplify optional reset handling As of commit bb475230b8e5 ("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 Signed-off-by: Herbert Xu --- .../crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 21 +++++++------------ 1 file changed, 8 insertions(+), 13 deletions(-) diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c index 709905ec4680..ef224d5e4903 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c @@ -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