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authorClaudiu Manoil <claudiu.manoil@freescale.com>2013-09-30 12:44:47 +0300
committerJoe Hershberger <joe.hershberger@ni.com>2013-11-22 17:03:17 -0600
commitb1690bc39cfdba82be34b1a98abc319339070698 (patch)
treebd6849caa41158fc16594377a60578adc44c0dea /drivers
parent82ef75ca5c69c7d053c07f509a901d2ad2e29570 (diff)
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net: tsec: Fix mac addr setup portability, cleanup
Fix the 32-bit memory access that is not "endianess safe", i.e. not giving the desired byte layout for LE cpus: tempval = *((uint *) (tmpbuf + 4)), where 'char tmpbuf[]'. Free the stack from rendundant local vars: tmpbuf[] and i. Use a portable type (u32) for the 32bit tsec register value holder: tempval. Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/tsec.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index 082cdec..e9138f0 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -473,11 +473,9 @@ static void tsec_halt(struct eth_device *dev)
*/
static int tsec_init(struct eth_device *dev, bd_t * bd)
{
- uint tempval;
- char tmpbuf[MAC_ADDR_LEN];
- int i;
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
+ u32 tempval;
int ret;
/* Make sure the controller is stopped */
@@ -490,16 +488,16 @@ static int tsec_init(struct eth_device *dev, bd_t * bd)
out_be32(&regs->ecntrl, ECNTRL_INIT_SETTINGS);
/* Copy the station address into the address registers.
- * Backwards, because little endian MACS are dumb */
- for (i = 0; i < MAC_ADDR_LEN; i++)
- tmpbuf[MAC_ADDR_LEN - 1 - i] = dev->enetaddr[i];
-
- tempval = (tmpbuf[0] << 24) | (tmpbuf[1] << 16) | (tmpbuf[2] << 8) |
- tmpbuf[3];
+ * For a station address of 0x12345678ABCD in transmission
+ * order (BE), MACnADDR1 is set to 0xCDAB7856 and
+ * MACnADDR2 is set to 0x34120000.
+ */
+ tempval = (dev->enetaddr[5] << 24) | (dev->enetaddr[4] << 16) |
+ (dev->enetaddr[3] << 8) | dev->enetaddr[2];
out_be32(&regs->macstnaddr1, tempval);
- tempval = *((uint *) (tmpbuf + 4));
+ tempval = (dev->enetaddr[1] << 24) | (dev->enetaddr[0] << 16);
out_be32(&regs->macstnaddr2, tempval);