linux-kernel - [PATCH 5/6] Fixup tangox_dma

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Date:   Wed, 23 Nov 2016 17:56:15 +0100
From:   Marc Gonzalez <marc_gonzalez@...madesigns.com>
To:     Mans Rullgard <mans@...sr.com>, Vinod Koul <vinod.koul@...el.com>
CC:     <dmaengine@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Sebastian Frias <sf84@...oste.net>, Mason <slash.tmp@...e.fr>,
        Thibaud Cornic <thibaud_cornic@...madesigns.com>
Subject: [PATCH 5/6] Fixup tangox_dma_reset

---
 drivers/dma/tango-dma.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/dma/tango-dma.c b/drivers/dma/tango-dma.c
index 5250c053a7b9..24e124942a2f 100644
--- a/drivers/dma/tango-dma.c
+++ b/drivers/dma/tango-dma.c
@@ -414,18 +414,14 @@ static void tangox_dma_desc_free(struct virt_dma_desc *vd)
 
 static void tangox_dma_reset(struct tangox_dma_device *dev)
 {
-	int i;
+	writel(0xffffffff, dev->sbox_base + SBOX_RESET);
+	writel(0xffffffff, dev->sbox_base + SBOX_RESET2);
 
-	for (i = 0; i < 2; i++) {
-		writel(0xffffffff, dev->sbox_base);
-		writel(0xff00ff00, dev->sbox_base);
-		writel(0xffffffff, dev->sbox_base + 4);
-		writel(0xff00ff00, dev->sbox_base + 4);
-		udelay(2);
-	}
+	writel(0xff00ff00, dev->sbox_base + SBOX_RESET);
+	writel(0xff00ff00, dev->sbox_base + SBOX_RESET2);
 
-	writel(0xffffffff, dev->sbox_base + 8);
-	writel(0xffffffff, dev->sbox_base + 12);
+	writel(0xffffffff, dev->sbox_base + SBOX_ROUTE);
+	writel(0xffffffff, dev->sbox_base + SBOX_ROUTE2);
 }
 
 static struct dma_chan *tangox_dma_xlate(struct of_phandle_args *dma_spec,
-- 
2.9.0