Takashi Iwai wrote: > At Wed, 20 Mar 2013 19:41:38 +0100, > Martin Mokrejs wrote: >> >> Hi Takashi, >> would you please describe your test system in more detail? How >> about 'lspci -tv'? And 'lsusb -v' of the broken device? > > I left the machine in my office, so I'll give details tomorrow. > It's a Realtek 5249 PCI-e card reader, and this appears as a PCI > device once when registered by pciehp. At cold boot, it doesn't > appear in lspci. It appears only when you insert the card. Also, > this device is no USB. It's supported by mfd/rtsx_pci driver in 3.9. > >> If I have Realtek MediaCardReader enabled in BIOS, no card in it, coldboot, and hot >> insert an ExpressCard into the slot, the Realtek MediaCardReader pops up in dmesg as >> a new PCI device. How about you? > > The device is hotplugged only when the option of my patch is enabled, > i.e. overriding the surprise capability check. > >> My card does NOT show in lspci (maybe because I never plugged in a data card into it) but does show in lsusb: > > So, it's a completely different case... > >> >> Bus 002 Device 005: ID 0bda:0138 Realtek Semiconductor Corp. RTS5138 Card Reader Controller >> Device Descriptor: >> bLength 18 >> bDescriptorType 1 >> bcdUSB 2.00 >> bDeviceClass 0 (Defined at Interface level) >> bDeviceSubClass 0 >> bDeviceProtocol 0 >> bMaxPacketSize0 64 >> idVendor 0x0bda Realtek Semiconductor Corp. >> idProduct 0x0138 RTS5138 Card Reader Controller >> bcdDevice 38.82 >> iManufacturer 1 Generic >> iProduct 2 USB2.0-CRW >> iSerial 3 20090516388200000 >> >> >> Can you try coldboot without a media card inserted before power up without >> your patch and check whether the CardReader pops up after you plugin some >> ExpressCard into an ExpressCardSlot (not the CardReader)? I presume it is >> a laptop. ;-) > > When you boot without the card, there is no PCI device. Triggering > PCI bus rescan also doesn't expose it. But, when you insert the card, > you'll get the notification in pciehp (seeing "Card present on Slot" > message), but pciehp doesn't do anything right now unless the > surprising bit is set. The device may appear if you trigger the PCI > bus rescan at this moment, too, though. > >> 2. Is the hotplug broken also under acpiphp? And again, does it get detected >> once you plugin some card into an ExpressCard slot? > > acpiphp doesn't load on this machine. While we concluded above that I have a different card (USB-hooked Realtek card) I need since about 3.5 kernel pcie_aspm=off to get acpiphp working. It does not work for all express cards but maybe this will help you to get *acpiphp* recognize the slot? Note: the same kernel command line pcie_aspm=off breaks *pciehp* on my laptop, so don't forget to delete it from grub.conf if you want to stick with *pciehp* (if your hardware is prone to hit same bug like me: https://bugzilla.kernel.org/show_bug.cgi?id=59391 . Just in case you could switch to acpiphp. ;) Martin -- 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
