[PATCH v2 08/16] net: stmmac: Use readl_poll_timeout
From: Corentin Labbe <clabbe.montjoie@gmail.com>
Date: 2017-02-08 08:36:51
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Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
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> --- 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 e4cda39..e60bfca 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;
--
2.10.2