From 8a70aeca80c2425b60ff821140b5b5c141e28ba1 Mon Sep 17 00:00:00 2001
From: LABBE Corentin <clabbe.montjoie@gmail.com>
Date: Wed, 8 Feb 2017 09:31:13 +0100
Subject: [PATCH] net: stmmac: Use readl_poll_timeout
The dwmac_dma_reset function use an open coded of readl_poll_timeout().
Replace the open coded handling with the proper function.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index e4cda39fb3b55..e60bfca2a7633 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -17,6 +17,7 @@
*******************************************************************************/
#include <linux/io.h>
+#include <linux/iopoll.h>
#include "common.h"
#include "dwmac_dma.h"
@@ -25,19 +26,16 @@
int dwmac_dma_reset(void __iomem *ioaddr)
{
u32 value = readl(ioaddr + DMA_BUS_MODE);
- int limit;
+ int err;
/* DMA SW reset */
value |= DMA_BUS_MODE_SFT_RESET;
writel(value, ioaddr + DMA_BUS_MODE);
- limit = 10;
- while (limit--) {
- if (!(readl(ioaddr + DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET))
- break;
- mdelay(10);
- }
- if (limit < 0)
+ err = readl_poll_timeout(ioaddr + DMA_BUS_MODE, value,
+ !(value & DMA_BUS_MODE_SFT_RESET),
+ 100000, 10000);
+ if (err)
return -EBUSY;
return 0;
--
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