This patch fixes a problem I've notived on a buggy PPC4xx system. This system has problems with the PHY MDIO communication and seemed to be stuck/crashed in miiphy_reset(). But degugging revealed, that the CPU didn't crash, but "only" hung in this counting loop for about 2 minutes.

This patch now uses a real timeout of 0.5 seconds (as mentioned in the comment in miiphy_reset).

Signed-off-by: Stefan Roese sr@denx.de Cc: Ben Warren biggerbadderben@gmail.com --- common/miiphyutil.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/common/miiphyutil.c b/common/miiphyutil.c index 196ef4a..856fbc7 100644 --- a/common/miiphyutil.c +++ b/common/miiphyutil.c @@ -293,7 +293,7 @@ int miiphy_info (char *devname, unsigned char addr, unsigned int *oui, int miiphy_reset (char *devname, unsigned char addr) { unsigned short reg; - int loop_cnt; + int timeout = 500;

if (miiphy_read (devname, addr, PHY_BMCR, &reg) != 0) { debug ("PHY status read failed\n"); @@ -311,13 +311,13 @@ int miiphy_reset (char *devname, unsigned char addr) * auto-clearing). This should happen within 0.5 seconds per the * IEEE spec. */ - loop_cnt = 0; reg = 0x8000; - while (((reg & 0x8000) != 0) && (loop_cnt++ < 1000000)) { - if (miiphy_read (devname, addr, PHY_BMCR, &reg) != 0) { - debug ("PHY status read failed\n"); - return (-1); + while (((reg & 0x8000) != 0) && timeout--) { + if (miiphy_read(devname, addr, PHY_BMCR, &reg) != 0) { + debug("PHY status read failed\n"); + return -1; } + udelay(1000); } if ((reg & 0x8000) == 0) { return (0);