linux-kernel - [PATCH 4/7] spi: mt65xx: Move pm_runtime

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Message-Id: <20220406100409.93113-5-angelogioacchino.delregno@collabora.com>
Date:   Wed,  6 Apr 2022 12:04:06 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     broonie@...nel.org
Cc:     matthias.bgg@...il.com, linux-spi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        nfraprado@...labora.com, kernel@...labora.com,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: [PATCH 4/7] spi: mt65xx: Move pm_runtime_enable() call to remove all gotos

The last goto in the probe function can be removed by calling
pm_runtime_enable() right before devm_spi_register_master(), as
only some init checks were being performed after enabling pm.
This is a cleanup and brings no functional changes.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/spi/spi-mt65xx.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 7f381d84a005..b8ec04795141 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -906,22 +906,18 @@ static int mtk_spi_probe(struct platform_device *pdev)
 	else
 		clk_disable_unprepare(mdata->spi_clk);
 
-	pm_runtime_enable(dev);
-
 	if (mdata->dev_comp->need_pad_sel) {
 		if (mdata->pad_num != master->num_chipselect) {
 			dev_err(dev,
 				"pad_num does not match num_chipselect(%d != %d)\n",
 				mdata->pad_num, master->num_chipselect);
-			ret = -EINVAL;
-			goto err_disable_runtime_pm;
+			return -EINVAL;
 		}
 
 		if (!master->cs_gpiods && master->num_chipselect > 1) {
 			dev_err(dev,
 				"cs_gpios not specified and num_chipselect > 1\n");
-			ret = -EINVAL;
-			goto err_disable_runtime_pm;
+			return -EINVAL;
 		}
 	}
 
@@ -934,18 +930,16 @@ static int mtk_spi_probe(struct platform_device *pdev)
 		dev_notice(dev, "SPI dma_set_mask(%d) failed, ret:%d\n",
 			   addr_bits, ret);
 
+	pm_runtime_enable(dev);
+
 	ret = devm_spi_register_master(dev, master);
 	if (ret) {
+		pm_runtime_disable(dev);
 		dev_err(dev, "failed to register master (%d)\n", ret);
-		goto err_disable_runtime_pm;
+		return ret;
 	}
 
 	return 0;
-
-err_disable_runtime_pm:
-	pm_runtime_disable(dev);
-
-	return ret;
 }
 
 static int mtk_spi_remove(struct platform_device *pdev)
-- 
2.35.1