Author: loos
Date: Sat Sep 12 16:46:41 2015
New Revision: 287716
URL: https://svnweb.freebsd.org/changeset/base/287716
Log:
Do not call mii_mediachg() from NIC interrupt handler.
This fixes the link instability on banana pi (A20).
Suggested by: yongari
Modified:
head/sys/dev/dwc/if_dwc.c
Modified: head/sys/dev/dwc/if_dwc.c
==============================================================================
--- head/sys/dev/dwc/if_dwc.c Sat Sep 12 16:30:01 2015 (r287715)
+++ head/sys/dev/dwc/if_dwc.c Sat Sep 12 16:46:41 2015 (r287716)
@@ -821,10 +821,8 @@ dwc_intr(void *arg)
DWC_LOCK(sc);
reg = READ4(sc, INTERRUPT_STATUS);
- if (reg) {
- mii_mediachg(sc->mii_softc);
+ if (reg)
READ4(sc, SGMII_RGMII_SMII_CTRL_STATUS);
- }
reg = READ4(sc, DMA_STATUS);
if (reg & DMA_STATUS_NIS) {
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