Messages in this thread | | | Date | Thu, 27 Jun 2019 16:38:30 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: PROBLEM: Marvell 88E8040 (sky2) fails after hibernation |
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Octavio,
On Mon, 24 Jun 2019, Octavio Alvarez wrote: > On 6/23/19 7:54 AM, Thomas Gleixner wrote: > > Load the driver on Linus master with the following module parameter: > > > > disable_msi=1 > > > > That switches to INTx usage. Does the machine resume proper with that? > > I did two tests: > > If I boot with sky2.disable_msi=1 on the kernel cmdline then the problem goes > away (when back from hibernation, the NIC works OK). > > If I boot regularly (disable_msi not set) and then do modprobe -r sky2; > modprobe sky2 disable_msi=1, the problem stays (when back from hibernation, > the NIC does not work).
Interesting. Did you verify that the driver still uses INTx after hibernation in /proc/interrupts?
cat /proc/interrupts | grep eth0
The 6st column should show IO-APIC for INTx. If it shows PCI-MSI then something went wrong.
Also please check Linus suspicion about the module being reloaded after hibernation through some distro magic.
Thanks,
tglx
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