Module Name: src
Committed By: msaitoh
Date: Fri Nov 2 08:04:42 UTC 2018
Modified Files:
src/sys/dev/pci: if_wm.c
Log Message:
Fix a PCH2 specific bug that wrong register value can be read when boot.
When a wrong value is read when boot, the read device ID was incorrect and
ukphy(3) is attached instead of ihphy(4). The bug might also result in
MDIC read/write error.
How to reproduce:
0) Boot Windows.
1) Leave some minutes.
2) Reboot to NetBSD.
To fix this problem, adding extra 100us delay at the end of
wm_gmii_mdic_{read,write}reg() on PCH2. Same as FreeBSD and linux.
Reported by David Brownlee a few days ago and also reported by jmcneill
a half year ago. Tested with my own Thinkpad X220.
XXX pullup-[78]
To generate a diff of this commit:
cvs rdiff -u -r1.591 -r1.592 src/sys/dev/pci/if_wm.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
