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[U-Boot,v4,05/18] net: mdio: Use mb() to be compatible for both ARM and PowerPC

Message ID 1407998707-9632-6-git-send-email-b18965@freescale.com
State Superseded
Headers show

Commit Message

Alison Wang Aug. 14, 2014, 6:44 a.m. UTC 
Use mb() instead of sync assembly instruction to be
compatible for both ARM and PowerPC.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
---
Change log:
 v4: No change.
 v3: Use mb() to be compatible for both ARM and PowerPC.
     Split from the 0004-arm-ls102xa-Add-etsec-support-for-LS102xA patch.
 v2: Add private mdio read and write support. 

 drivers/net/fsl_mdio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/net/fsl_mdio.c b/drivers/net/fsl_mdio.c
index 6eae78f..2657c44 100644
--- a/drivers/net/fsl_mdio.c
+++ b/drivers/net/fsl_mdio.c
@@ -19,7 +19,7 @@  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");
+	mb();
 
 	while ((in_be32(&phyregs->miimind) & MIIMIND_BUSY) && timeout--)
 		;
@@ -37,11 +37,11 @@  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");
+	mb();
 
 	/* Initiate a read command, and wait */
 	out_be32(&phyregs->miimcom, MIIMCOM_READ_CYCLE);
-	asm("sync");
+	mb();
 
 	/* Wait for the the indication that the read is done */
 	while ((in_be32(&phyregs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY))