From 8a70aeca80c2425b60ff821140b5b5c141e28ba1 Mon Sep 17 00:00:00 2001 From: LABBE Corentin 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 Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- 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 e4cda39fb3b5..e60bfca2a763 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c @@ -17,6 +17,7 @@ *******************************************************************************/ #include +#include #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; -- 2.45.2