https://bugzilla.kernel.org/show_bug.cgi?id=214789 --- Comment #9 from Scott Arnold (scott.c.arnold@xxxxxxxx) --- Hello, The timing card driver receives no interrupts according to debug. IRQ16: IO-APIC 16-fasteoi ehci_hcd:usb1, hpilo, rt_pcclk Ehci_hcd entries in /sys/kernel/debug/usb/devices: T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2 B: Alloc= 0/800 us ( 0%), #Int= 4, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev= 5.11 S: Manufacturer=Linux 5.11.17_OBCS_1 ehci_hcd S: Product=EHCI Host Controller S: SerialNumber=0000:00:1a.0 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2 B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev= 5.11 S: Manufacturer=Linux 5.11.17_OBCS_1 ehci_hcd S: Product=EHCI Host Controller S: SerialNumber=0000:00:1d.0 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms I have not tried enabling debug in ehci_hcd yet. Moving card to another slot did not help, still sharing IRQ 16 Thanks Scott -----Original Message----- From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx <bugzilla-daemon@xxxxxxxxxxxxxxxxxxx> Sent: Thursday, October 21, 2021 2:46 PM To: Arnold, Scott C. (JSC-CD13)[SGT, INC] <scott.c.arnold@xxxxxxxx> Subject: [EXTERNAL] [Bug 214789] ehci-hcd.c ISR https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.kernel.org%2Fshow_bug.cgi%3Fid%3D214789&data=04%7C01%7Cscott.c.arnold%40nasa.gov%7Ccc119a80759145cdeec508d994cb775f%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637704423875337090%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=J15Rmcdsnn%2Bp7O%2FFtRSqnlohPqS%2FxEGqznFqLMQaNOs%3D&reserved=0 --- Comment #8 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- How many of those 90 interrupts were issued by the EHCI host controller as opposed to the card? Are there any USB devices attached to the host controller? What does /sys/kernel/debug/usb/devices have to say? Does the card use edge-triggered interrupts rather than level-triggered? Have you tried adding any debugging messages to ehci_irq to find out what's going on when it runs? -- You may reply to this email to add a comment. You are receiving this mail because: You reported the bug. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
