diff options
| author | Alison Wang <b18965@freescale.com> | 2014-09-05 13:52:37 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-09-08 10:30:33 -0700 |
| commit | d2614ea0ffda9d7c0d049f0fa5b23ce390bcb7a8 (patch) | |
| tree | fc016e14fff7617735b71a52dd56cbf302ff460a /drivers | |
| parent | 93f26f130eede8db0cb47afcaf66016987b91731 (diff) | |
net: mdio: Use mb() to be compatible for both ARM and PowerPC
Use mb() instead of sync assembly instruction to be
compatible for both ARM and PowerPC.
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/fsl_mdio.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/fsl_mdio.c b/drivers/net/fsl_mdio.c index 8d09f5d1fe..d6b181b386 100644 --- a/drivers/net/fsl_mdio.c +++ b/drivers/net/fsl_mdio.c @@ -19,7 +19,8 @@ void tsec_local_mdio_write(struct tsec_mii_mng __iomem *phyregs, int port_addr, out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f)); out_be32(&phyregs->miimcon, value); - asm("sync"); + /* Memory barrier */ + mb(); while ((in_be32(&phyregs->miimind) & MIIMIND_BUSY) && timeout--) ; @@ -37,11 +38,13 @@ int tsec_local_mdio_read(struct tsec_mii_mng __iomem *phyregs, int port_addr, /* Clear the command register, and wait */ out_be32(&phyregs->miimcom, 0); - asm("sync"); + /* Memory barrier */ + mb(); /* Initiate a read command, and wait */ out_be32(&phyregs->miimcom, MIIMCOM_READ_CYCLE); - asm("sync"); + /* Memory barrier */ + mb(); /* Wait for the the indication that the read is done */ while ((in_be32(&phyregs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY)) |