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When there is no AC power, NIC may not work after changing mac address. Please refer to following link. http://www.spinics.net/lists/netdev/msg356572.html This issue is caused by runtime power management. When there is no AC power, if we put NIC down (ifconfig down), the driver will be in runtime suspend state and hardware will be put into D3 state. During this time, driver cannot access hardware regisers. So if you set new mac address during this time, it will not be set to hardware. After resume, NIC will keep using the old mac address and the network will not work normally. In this patch I add detecting runtime pm status when setting mac address. If driver is in runtime suspend state, it will skip setting mac address, keep the new mac address, and set the new mac address during runtime resume. Signed-off-by: Chunhao Lin <hau@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| 8139cp.c | ||
| 8139too.c | ||
| atp.c | ||
| atp.h | ||
| Kconfig | ||
| Makefile | ||
| r8169.c | ||