4) USB no longer working. Was working fine in vanilla test4.
I'm suspecting this is because of a change to make UHCI initialization more closely match what EHCI and OHCI do: kick out pre-OS (BIOS/SMM/...) boot time hooks, then reset.
Try changing uhci_reset() so it calls hc_reset() first, and then does the config space write to get rid of "legacy support mode". That's the sequence it used before, which seems odd because it's resetting hardware that it's not yet responsible for. Maybe the hc_reset() code should turn off that legacy mode, and do some IRQ blocking.
drivers/usb/host/uhci-hcd.c: USB Universal Host Controller Interface driver v2.1
uhci-hcd 0000:00:11.2: UHCI Host Controller
irq 11: nobody cared!
Call Trace:
[<c010cbdb>] __report_bad_irq+0x2b/0x90
[<c010ccd4>] note_interrupt+0x64/0xa0
[<c010cf6e>] do_IRQ+0x12e/0x140
[<c010b49c>] common_interrupt+0x18/0x20
[<c0124603>] do_softirq+0x43/0xa0
[<c010cf48>] do_IRQ+0x108/0x140
[<c010b49c>] common_interrupt+0x18/0x20
[<c01add8c>] pci_bus_write_config_word+0x5c/0x80
[<cf9f94a0>] uhci_reset+0x40/0x50 [uhci_hcd]
There's the problem ... at least with your hardware and BIOS; it worked OK on mine.
Seems that whatever mode the hardware is in at that point, it feels free to send an un-asked-for IRQ.
[<cf8a6a32>] usb_hcd_pci_probe+0x192/0x480 [usbcore] [<c01b176b>] pci_device_probe_static+0x4b/0x60 [<c01b18d6>] __pci_device_probe+0x36/0x50 [<c01b191c>] pci_device_probe+0x2c/0x50 [<c01f5dad>] bus_match+0x3d/0x70 [<c01f5f00>] driver_attach+0x70/0xb0 [<c01f6201>] bus_add_driver+0xa1/0xc0 [<c01f6651>] driver_register+0x31/0x40 [<c01b1b9e>] pci_register_driver+0x5e/0x90 [<cf8e90c7>] uhci_hcd_init+0xc7/0x143 [uhci_hcd] [<c0137043>] sys_init_module+0x123/0x270 [<c010b32f>] syscall_call+0x7/0xb
handlers: [<cf91c4b0>] (snd_via82xx_interrupt+0x0/0x110 [snd_via82xx]) Disabling IRQ #11 uhci-hcd 0000:00:11.2: irq 11, io base 0000d400 uhci-hcd 0000:00:11.2: new USB bus registered, assigned bus number 1 hub 1-0:0: USB hub found hub 1-0:0: 2 ports detected uhci-hcd 0000:00:11.3: UHCI Host Controller uhci-hcd 0000:00:11.3: irq 11, io base 0000d800 uhci-hcd 0000:00:11.3: new USB bus registered, assigned bus number 2 hub 2-0:0: USB hub found hub 2-0:0: 2 ports detected hub 1-0:0: debounce: port 1: delay 100ms stable 4 status 0x301 hub 1-0:0: new USB device on port 1, assigned address 2 usb 1-1: control timeout on ep0out uhci-hcd 0000:00:11.2: Unlink after no-IRQ? Different ACPI or APIC settings may help.
Unclear why it's now not receiving IRQ 11 ... it's fair to disable IRQ #11 when there's no IRQ handler for it, but at that point there is a handler and I'd sure expect it to work. Which suggests there is a second IRQ-related problem here.
- Dvae
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