net: gem: Use wait_for_bit() instead of private mdio_wait()

Using generic wait_for_bit() implementation instead of
using private wait function.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index d2e5e7c7cd1428dbeb1d0590e49157e3790ed346..95b4d6e4f0aacb956fcccdb97a2cdbee66e1451a 100644 (file)
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -183,33 +183,17 @@ struct zynq_gem_priv {
        struct mii_dev *bus;
 };
 
-static inline int mdio_wait(struct zynq_gem_regs *regs)
-{
-       u32 timeout = 20000;
-
-       /* Wait till MDIO interface is ready to accept a new transaction. */
-       while (--timeout) {
-               if (readl(&regs->nwsr) & ZYNQ_GEM_NWSR_MDIOIDLE_MASK)
-                       break;
-               WATCHDOG_RESET();
-       }
-
-       if (!timeout) {
-               printf("%s: Timeout\n", __func__);
-               return 1;
-       }
-
-       return 0;
-}
-
 static u32 phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
                        u32 op, u16 *data)
 {
        u32 mgtcr;
        struct zynq_gem_regs *regs = priv->iobase;
+       int err;
 
-       if (mdio_wait(regs))
-               return 1;
+       err = wait_for_bit(__func__, &regs->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
+                           true, 20000, true);
+       if (err)
+               return err;
 
        /* Construct mgtcr mask for the operation */
        mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
@@ -219,8 +203,10 @@ static u32 phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
        /* Write mgtcr and wait for completion */
        writel(mgtcr, &regs->phymntnc);
 
-       if (mdio_wait(regs))
-               return 1;
+       err = wait_for_bit(__func__, &regs->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
+                           true, 20000, true);
+       if (err)
+               return err;
 
        if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
                *data = readl(&regs->phymntnc);