On 16 января 2010 21:55:52 Andy Walls wrote: > > cx25840 3-0044: IRQ Status: tsr rsr rto > > cx25840 3-0044: IRQ Enables: rse rte roe > > cx25840 3-0044: rx read: 9046778 ns mark > > cx25840 3-0044: rx read: 2206333 ns space > > cx25840 3-0044: rx read: 606926 ns mark > > cx25840 3-0044: rx read: end of rx > > cx25840 3-0044: IRQ Status: tsr rsr rto > > cx25840 3-0044: IRQ Enables: rse rte roe > > cx25840 3-0044: rx read: 9055815 ns mark > > cx25840 3-0044: rx read: 2203519 ns space > > cx25840 3-0044: rx read: 582481 ns mark > > cx25840 3-0044: rx read: end of rx > > This is still good. :) > > Those are NEC repeat sequences, but you probably know that already. Remote works until that point > > > irq 16: nobody cared (try booting with the "irqpoll" option) > > Pid: 2971, comm: X Not tainted 2.6.33-rc4 #3 > > Call Trace: > > [<c1054700>] ? __report_bad_irq+0x24/0x69 > > [...] > > > [<c1425105>] ? syscall_call+0x7/0xb > > handlers: > > [<c1332132>] (usb_hcd_irq+0x0/0x59) > > [<f8aafd88>] (cx23885_irq+0x0/0x4e0 [cx23885]) > > I have checked in more changes to > > http://linuxtv.org/hg/~awalls/cx23885-ir2 > > Please test again using these module parameters: > > modprobe cx25840 ir_debug=2 debug=2 > modprobe cx23885 ir_input_debug=2 irq_debug=7 debug=7 > > > I am looking for logging of the interrupt statuses and enables. They > should look something like this: > > > kernel: cx23885[0]/0: pci_status: 0x08000000 pci_mask: 0x08000001 > [...] > kernel: cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) > kernel: cx25840 6-0044: AV Core IRQ status (entry): ir > kernel: cx25840 6-0044: AV Core ir IRQ status: 0x31 disables: 0x20 > kernel: cx25840 6-0044: IR IRQ Status: tsr rsr rto > kernel: cx25840 6-0044: IR IRQ Enables: rse rte roe > kernel: cx25840 6-0044: AV Core audio IRQ status: 0x80 disables: 0xff > kernel: cx25840 6-0044: AV Core audio MC IRQ status: 0x2000 enables: > 0x0000 kernel: cx25840 6-0044: AV Core video IRQ status: 0x01a7 disables: > 0xffff kernel: cx25840 6-0044: AV Core IRQ status (exit): > > > But I was able to reproduce something like this when changing enable the > TSR interrupt enables using v4l2-dbg to change the register manually: > > kernel: cx23885[0]/0: pci_status: 0x08300000 pci_mask: 0x08000001 > [...] > kernel: cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) > kernel: cx25840 6-0044: AV Core IRQ status (entry): > <---- no irq flags (all 0's) kernel: cx25840 6-0044: AV Core ir IRQ > status: 0x00 disables: 0x00 <---- all 0's kernel: cx25840 > 6-0044: AV Core audio IRQ status: 0x00 disables: 0x00 <---- all 0's > kernel: cx25840 6-0044: AV Core audio MC IRQ status: 0x0000 enables: 0x0000 > <---- all 0's kernel: cx25840 6-0044: AV Core video IRQ status: 0x0000 > disables: 0x0000 <---- all 0's kernel: cx25840 6-0044: AV Core IRQ > status (exit): > > So there are some conditions where the AV Core can signal an interrupt, > but not be ready to be read over the I2C bus. > > I have added code to count when these happen and handle them as spurious > interrupts. However, if the code gets too many (20) consecutive > spurious interrupts without at least one real one, it disables the AV > Core interrupt. > > > Regards, > Andy Spurious interrupts counter reaches #20 almost immediately after modprobe. There is no time to press a key. DVB: registering adapter 0 frontend 0 (Montage Technology DS3000/TS2020)... cx23885_dev_checkrevision() Hardware revision = 0xb0 cx23885[0]/0: found at 0000:01:00.0, rev: 2, irq: 16, latency: 0, mmio: 0xfe800000 cx23885 0000:01:00.0: setting latency timer to 64 IRQ 16/cx23885[0]: IRQF_DISABLED is not guaranteed on shared IRQs cx23885[0]/0: pci_status: 0x083f4000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) cx25840 3-0044: AV Core IRQ status (entry): cx25840 3-0044: AV Core ir IRQ status: 0x00 disables: 0x00 cx25840 3-0044: AV Core audio IRQ status: 0x00 disables: 0x00 cx25840 3-0044: AV Core audio MC IRQ status: 0x0000 enables: 0x0000 cx25840 3-0044: AV Core video IRQ status: 0x0000 disables: 0x0000 cx25840 3-0044: AV Core IRQ status (exit): cx23885[0]/0: consecutive spurious AV Core interrupt #1 [...] cx23885[0]/0: pci_status: 0x08004000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) cx25840 3-0044: AV Core IRQ status (entry): cx25840 3-0044: AV Core ir IRQ status: 0x00 disables: 0x00 cx25840 3-0044: AV Core audio IRQ status: 0x00 disables: 0x00 cx25840 3-0044: AV Core audio MC IRQ status: 0x0000 enables: 0x0000 cx25840 3-0044: AV Core video IRQ status: 0x0000 disables: 0x0000 cx25840 3-0044: AV Core IRQ status (exit): cx23885[0]/0: consecutive spurious AV Core interrupt #20 cx23885[0]: disabling AV Core/IR interrupt: too many spurious interrupts input: cx23885 IR (TeVii S470) as /class/input/input24 Creating IR device irrcv0 I commented out interrupt disabling line in order to get some debug to you. But it occupied gigabytes on hard disk quickly. [...] cx23885[0]/0: consecutive spurious AV Core interrupt #95 cx23885[0]: disabling AV Core/IR interrupt: too many spurious interrupts cx23885[0]/0: pci_status: 0x08304000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) cx25840 3-0044: AV Core IRQ status (entry): ir cx25840 3-0044: AV Core ir IRQ status: 0x31 disables: 0x20 cx25840 3-0044: IR IRQ Status: tsr rsr rto cx25840 3-0044: IR IRQ Enables: rse rte roe cx25840 3-0044: AV Core audio IRQ status: 0x80 disables: 0xff cx25840 3-0044: AV Core audio MC IRQ status: 0x2000 enables: 0x0000 cx25840 3-0044: AV Core video IRQ status: 0x01a7 disables: 0xffff cx25840 3-0044: AV Core IRQ status (exit): cx23885[0]/0: pci_status: 0x08004000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) cx25840 3-0044: AV Core IRQ status (entry): cx25840 3-0044: AV Core ir IRQ status: 0x20 disables: 0x20 cx25840 3-0044: AV Core audio IRQ status: 0x80 disables: 0xff cx25840 3-0044: AV Core audio MC IRQ status: 0x2000 enables: 0x0000 cx25840 3-0044: AV Core video IRQ status: 0x01a7 disables: 0xffff cx25840 3-0044: AV Core IRQ status (exit): cx23885[0]/0: consecutive spurious AV Core interrupt #1 cx25840 3-0044: rx read: 9061000 ns mark cx25840 3-0044: rx read: 2207667 ns space cx25840 3-0044: rx read: 586333 ns mark cx25840 3-0044: rx read: end of rx cx23885 0000:01:00.0: NEC IR auto repeat detected cx23885[0]/0: pci_status: 0x08304000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) cx25840 3-0044: AV Core IRQ status (entry): cx25840 3-0044: AV Core ir IRQ status: 0x20 disables: 0x20 cx25840 3-0044: AV Core audio IRQ status: 0x80 disables: 0xff cx25840 3-0044: AV Core audio MC IRQ status: 0x2000 enables: 0x0000 cx25840 3-0044: AV Core video IRQ status: 0x01a7 disables: 0xffff cx25840 3-0044: AV Core IRQ status (exit): cx23885[0]/0: consecutive spurious AV Core interrupt #2 cx23885[0]/0: pci_status: 0x08004000 pci_mask: 0x08000000 cx23885[0]/0: vida_status: 0x00000000 vida_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts1_status: 0x00000000 ts1_mask: 0x00000000 count: 0x0 cx23885[0]/0: ts2_status: 0x00000000 ts2_mask: 0x00000000 count: 0xc7381f2a cx23885[0]/0: (PCI_MSK_AV_CORE 0x08000000) [...] -- Igor M. 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