diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/fsl_pq_mdio.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/fsl_pq_mdio.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c index a422838b4f1d..964c6bf37710 100644 --- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c +++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c @@ -104,7 +104,7 @@ static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, { struct fsl_pq_mdio_priv *priv = bus->priv; struct fsl_pq_mii __iomem *regs = priv->regs; - u32 status; + unsigned int timeout; /* Set the PHY address and the register address we want to write */ iowrite32be((mii_id << 8) | regnum, ®s->miimadd); @@ -113,10 +113,13 @@ static int fsl_pq_mdio_write(struct mii_bus *bus, int mii_id, int regnum, iowrite32be(value, ®s->miimcon); /* Wait for the transaction to finish */ - status = spin_event_timeout(!(ioread32be(®s->miimind) & - MIIMIND_BUSY), MII_TIMEOUT, 0); + timeout = MII_TIMEOUT; + while ((ioread32be(®s->miimind) & MIIMIND_BUSY) && timeout) { + cpu_relax(); + timeout--; + } - return status ? 0 : -ETIMEDOUT; + return timeout ? 0 : -ETIMEDOUT; } /* @@ -133,7 +136,7 @@ static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum) { struct fsl_pq_mdio_priv *priv = bus->priv; struct fsl_pq_mii __iomem *regs = priv->regs; - u32 status; + unsigned int timeout; u16 value; /* Set the PHY address and the register address we want to read */ @@ -144,10 +147,14 @@ static int fsl_pq_mdio_read(struct mii_bus *bus, int mii_id, int regnum) iowrite32be(MII_READ_COMMAND, ®s->miimcom); /* Wait for the transaction to finish, normally less than 100us */ - status = spin_event_timeout(!(ioread32be(®s->miimind) & - (MIIMIND_NOTVALID | MIIMIND_BUSY)), - MII_TIMEOUT, 0); - if (!status) + timeout = MII_TIMEOUT; + while ((ioread32be(®s->miimind) & + (MIIMIND_NOTVALID | MIIMIND_BUSY)) && timeout) { + cpu_relax(); + timeout--; + } + + if (!timeout) return -ETIMEDOUT; /* Grab the value of the register from miimstat */ @@ -162,7 +169,7 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus) { struct fsl_pq_mdio_priv *priv = bus->priv; struct fsl_pq_mii __iomem *regs = priv->regs; - u32 status; + unsigned int timeout; mutex_lock(&bus->mdio_lock); @@ -173,12 +180,15 @@ static int fsl_pq_mdio_reset(struct mii_bus *bus) iowrite32be(MIIMCFG_INIT_VALUE, ®s->miimcfg); /* Wait until the bus is free */ - status = spin_event_timeout(!(ioread32be(®s->miimind) & - MIIMIND_BUSY), MII_TIMEOUT, 0); + timeout = MII_TIMEOUT; + while ((ioread32be(®s->miimind) & MIIMIND_BUSY) && timeout) { + cpu_relax(); + timeout--; + } mutex_unlock(&bus->mdio_lock); - if (!status) { + if (!timeout) { dev_err(&bus->dev, "timeout waiting for MII bus\n"); return -EBUSY; } |