Hello, After upgrading from 2.6.18.3 to 2.6.19.2 on an x86_64 machine I noticed that the EHCI USB host is unable to work properly after a kexec invocation. This makes it impossible to mount the rootfs in the configuration I'm using.
According to the prints, the irq changes from 23 to 10. NOTE: Since the device is already connected at boot, I've added a patch that disables the scanning delay for the first detected device, in order to shorten the time it takes for the boot process. It worked on 2.6.18.3, so I wonder what has changed... [ 92.426719] ehci_hcd 0000:00:1d.7: EHCI Host Controller [ 92.432008] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 [ 92.439422] ehci_hcd 0000:00:1d.7: debug port 1 [ 92.443961] ehci_hcd 0000:00:1d.7: irq 10, io mem 0xdc001000 [ 92.453472] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 92.461034] usb usb1: configuration #1 chosen from 1 choice [ 92.466625] hub 1-0:1.0: USB hub found [ 92.470373] hub 1-0:1.0: 8 ports detected [ 92.581134] Initializing USB Mass Storage driver... [ 92.828571] usb 1-1: new high speed USB device using ehci_hcd and address 2 [ 93.834658] ehci_hcd 0000:00:1d.7: Unlink after no-IRQ? Controller is probably using the wrong IRQ. [ 104.374665] usb 1-1: device not accepting address 2, error -110 [ 104.494441] usb 1-1: new high speed USB device using ehci_hcd and address 3 [ 116.024567] usb 1-1: device not accepting address 3, error -110 [ 116.144343] usb 1-1: new high speed USB device using ehci_hcd and address 4 [ 126.556589] usb 1-1: device not accepting address 4, error -110 [ 126.676365] usb 1-1: new high speed USB device using ehci_hcd and address 5 [ 137.088612] usb 1-1: device not accepting address 5, error -110 [ 137.336145] usb 1-2: new high speed USB device using ehci_hcd and address 6 [ 148.866271] usb 1-2: device not accepting address 6, error -110 [ 148.982055] usb 1-2: new high speed USB device using ehci_hcd and address 7 [ 160.512181] usb 1-2: device not accepting address 7, error -110 [ 160.627965] usb 1-2: new high speed USB device using ehci_hcd and address 8 [ 171.040211] usb 1-2: device not accepting address 8, error -110 [ 171.155995] usb 1-2: new high speed USB device using ehci_hcd and address 9 [ 181.568241] usb 1-2: device not accepting address 9, error -110 [ 181.574184] usbcore: registered new interface driver usb-storage [ 181.580182] USB Mass Storage support registered. A normal boot works properly: [ 78.139976] ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 23 [ 78.148121] ehci_hcd 0000:00:1d.7: EHCI Host Controller [ 78.153411] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 [ 78.160821] ehci_hcd 0000:00:1d.7: debug port 1 [ 78.165362] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xdc001000 [ 78.174871] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 78.182454] usb usb1: configuration #1 chosen from 1 choice [ 78.188045] hub 1-0:1.0: USB hub found [ 78.191791] hub 1-0:1.0: 8 ports detected [ 78.303392] Initializing USB Mass Storage driver... [ 78.546834] usb 1-1: new high speed USB device using ehci_hcd and address 2 [ 78.692172] usb 1-1: configuration #1 chosen from 1 choice [ 78.942075] usb 1-2: new high speed USB device using ehci_hcd and address 3 [ 79.083324] usb 1-2: configuration #1 chosen from 1 choice [ 79.089135] scsi0 : SCSI emulation for USB Mass Storage devices [ 79.095172] scsi1 : SCSI emulation for USB Mass Storage devices [ 79.101184] usbcore: registered new interface driver usb-storage - Dan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/