diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c index 9becca280074..6e30d7eb4983 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c @@ -6,6 +6,7 @@ */ #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/delay.h> #include "common.h" #include "dwmac4_dma.h" @@ -14,22 +15,14 @@ int dwmac4_dma_reset(void __iomem *ioaddr) { u32 value = readl(ioaddr + DMA_BUS_MODE); - int limit; /* 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) - return -EBUSY; - return 0; + return readl_poll_timeout(ioaddr + DMA_BUS_MODE, value, + !(value & DMA_BUS_MODE_SFT_RESET), + 10000, 100000); } void dwmac4_set_rx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan) |