PHY read timeouts return 0xffffffff and bypass the current bad/no PHY
checks. This adds a check specifically for that read timeout to avoid
probing PHYs that don't exist.
---
freebsd/sys/dev/mii/mii.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/freebsd/sys/dev/mii/mii.c b/freebsd/sys/dev/mii/mii.c
index d0428f24..8f087cab 100644
--- a/freebsd/sys/dev/mii/mii.c
+++ b/freebsd/sys/dev/mii/mii.c
@@ -474,6 +474,7 @@ mii_attach(device_t dev, device_t *miibus, if_t ifp,
*/
bmsr = MIIBUS_READREG(dev, ma.mii_phyno, MII_BMSR);
if (bmsr == 0 || bmsr == 0xffff ||
+ bmsr == 0xffffffff ||
(bmsr & (BMSR_EXTSTAT | BMSR_MEDIAMASK)) == 0) {
/* Assume no PHY at this address. */
continue;
--
2.20.1
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