Lucas Stach <l.stach@xxxxxxxxxxxxxx> writes: >> TW6869: PCI 0000:04:00.0, IRQ 336, MMIO 0x1100000 >> TW686x 0000:04:00.0: enabling device (0140 -> 0142) >> > I don't see whee the device even tries to use MSI IRQs. Even if the > infrastructure is enabled it opts to use legacy INTA. It only tries to use normal IRQ. > There is no upstream driver for this chip, so I don't know where to look > to find out if the driver tries to enable MSI. It's been posted on linux-media list... I added pci_enable_msi() to this driver and it didn't help. > Is what you are saying that if you enable MSI support in the kernel, it > breaks legacy IRQs? Precisely. However, MSI doesn't seem to work either. Could be a problem specific to this TW6869 card. Ventana GW5410 has 5 mPCIe slots, and (with MSI enabled in the system) those IRQs (non-MSI) don't work in any slot: 304: 0 0 0 0 PCI-MSI 0 Edge PCIe PME, aerdrv 336: 0 0 0 0 GPC 123 Level TW8689 in J7 slot 337: 0 0 0 0 GPC 122 Level TW8689 in J8, J10, J11 338: 0 0 0 0 GPC 121 Level TW8689 in J6) If I enable MSI on this card (adding pci_enable_msi()): 313: 0 0 0 0 PCI-MSI 9 Edge TW6869 in J7 slot The only way I can get it to work is by disabling MSI (system wide). -- Krzysztof Halasa Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
