Messages in this thread | | | From | Shawn Starr <> | Subject | [2.6.18-rc2][e1000][swsusp] - Regression - Suspend to disk and resume breaks e1000 | Date | Sun, 16 Jul 2006 05:09:52 -0400 |
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Hardware
IBM ThinkPad T42 E1000 card info:
02:01.0 Ethernet controller: Intel Corporation 82540EP Gigabit Ethernet Controller (Mobile) (rev 03) Subsystem: IBM PRO/1000 MT Mobile Connection Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 9 Memory at c0220000 (32-bit, non-prefetchable) [size=128K] Memory at c0200000 (32-bit, non-prefetchable) [size=64K] I/O ports at 8000 [size=64] [virtual] Expansion ROM at ec000000 [disabled] [size=64K] Capabilities: [dc] Power Management version 2
Steps to reproduce:
1) Suspend to disk normally 2) Resume from disk, the e1000 will show garbage for network statistics.
<snip> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:83 errors:4294967254 dropped:4294967289 overruns:0 frame:4294967268 TX packets:76 errors:4294967282 dropped:0 overruns:0 carrier:4294967275 collisions:4294967289 txqueuelen:100 RX bytes:50728 (49.5 KiB) TX bytes:10138 (9.9 KiB) Base address:0x8000 Memory:c0220000-c0240000
Did something change in the driver that forgot to save the registers / not register back upon resumption from disk? I can't tell from the code how the driver knows its been brought down to S3 or S4 states. A workaround is to then suspend to memory and resume, the e1000 will work again. This is repeatable each time.
Not sure if anyone else noticed this.
Thanks,
Shawn. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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