linux-kernel - [PATCH 2/6] dmaengine: stm32-mdma: use reset controller only at probe time

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Date:   Mon, 27 Jan 2020 09:53:30 +0100
From:   Amelie Delaunay <amelie.delaunay@...com>
To:     Vinod Koul <vkoul@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>
CC:     <dmaengine@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Amelie Delaunay <amelie.delaunay@...com>,
        Pierre-Yves MORDRET <pierre-yves.mordret@...com>
Subject: [PATCH 2/6] dmaengine: stm32-mdma: use reset controller only at probe time

From: Etienne Carriere <etienne.carriere@...com>

Remove reset controller reference from device instance since it is
used only at probe time.

Signed-off-by: Etienne Carriere <etienne.carriere@...com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>
---
 drivers/dma/stm32-mdma.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 2898411941d5..a0fb80dfb2e9 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -273,7 +273,6 @@ struct stm32_mdma_device {
 	void __iomem *base;
 	struct clk *clk;
 	int irq;
-	struct reset_control *rst;
 	u32 nr_channels;
 	u32 nr_requests;
 	u32 nr_ahb_addr_masks;
@@ -1532,6 +1531,7 @@ static int stm32_mdma_probe(struct platform_device *pdev)
 	struct dma_device *dd;
 	struct device_node *of_node;
 	struct resource *res;
+	struct reset_control *rst;
 	u32 nr_channels, nr_requests;
 	int i, count, ret;
 
@@ -1590,11 +1590,11 @@ static int stm32_mdma_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	dmadev->rst = devm_reset_control_get(&pdev->dev, NULL);
-	if (!IS_ERR(dmadev->rst)) {
-		reset_control_assert(dmadev->rst);
+	rst = devm_reset_control_get(&pdev->dev, NULL);
+	if (!IS_ERR(rst)) {
+		reset_control_assert(rst);
 		udelay(2);
-		reset_control_deassert(dmadev->rst);
+		reset_control_deassert(rst);
 	}
 
 	dd = &dmadev->ddev;
-- 
2.17.1