linux-kernel - [PATCH v2 14/14] ASoC: sunxi: simplify optional reset handling

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Date:   Wed, 15 Mar 2017 12:31:57 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     alsa-devel@...a-project.org
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v2 14/14] ASoC: sunxi: 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 and to
call reset_control_deassert unconditionally.

Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Acked-by: Mark Brown <broonie@...nel.org>
Acked-by: Chen-Yu Tsai <wens@...e.org>
---
 sound/soc/sunxi/sun4i-spdif.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index eaefd07a5ed08..cdf8a6d86010c 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -521,13 +521,12 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
 
 	if (quirks->has_reset) {
 		host->rst = devm_reset_control_get_optional(&pdev->dev, NULL);
-		if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) {
-			ret = -EPROBE_DEFER;
+		if (IS_ERR(host->rst)) {
+			ret = PTR_ERR(host->rst);
 			dev_err(&pdev->dev, "Failed to get reset: %d\n", ret);
 			return ret;
 		}
-		if (!IS_ERR(host->rst))
-			reset_control_deassert(host->rst);
+		reset_control_deassert(host->rst);
 	}
 
 	ret = devm_snd_soc_register_component(&pdev->dev,
-- 
2.11.0