linux-kernel - [PATCH 13/14] usb: host: ehci-st: simplify optional reset handling

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Date:   Mon, 30 Jan 2017 12:41:15 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        Ramiro Oliveira <Ramiro.Oliveira@...opsys.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Peter Griffin <peter.griffin@...aro.org>,
        Lee Jones <lee.jones@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 13/14] usb: host: ehci-st: 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 return errors from devm_reset_control_get_optional_shared
unconditionally.

Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Cc: Peter Griffin <peter.griffin@...aro.org>
Cc: Lee Jones <lee.jones@...aro.org>
Cc: Alan Stern <stern@...land.harvard.edu>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/host/ehci-st.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
index be4a2788fc582..12e803d2c98df 100644
--- a/drivers/usb/host/ehci-st.c
+++ b/drivers/usb/host/ehci-st.c
@@ -210,18 +210,14 @@ static int st_ehci_platform_probe(struct platform_device *dev)
 		devm_reset_control_get_optional_shared(&dev->dev, "power");
 	if (IS_ERR(priv->pwr)) {
 		err = PTR_ERR(priv->pwr);
-		if (err == -EPROBE_DEFER)
-			goto err_put_clks;
-		priv->pwr = NULL;
+		goto err_put_clks;
 	}
 
 	priv->rst =
 		devm_reset_control_get_optional_shared(&dev->dev, "softreset");
 	if (IS_ERR(priv->rst)) {
 		err = PTR_ERR(priv->rst);
-		if (err == -EPROBE_DEFER)
-			goto err_put_clks;
-		priv->rst = NULL;
+		goto err_put_clks;
 	}
 
 	if (pdata->power_on) {
-- 
2.11.0