Re: [PATCH v1] ehci-pci: disable for Intel MID platforms

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 28 Jan 2015, Peter Chen wrote:

> > > Hi Andy, Would you define pci_id at ci_hdrc_pci.c (instead of ehci-pci.c)
> > > at your platform code/table to fix this problem?
> > > I am not familiar with pci, but it works at other platforms, like ARM.
> > 
> > You can't remove the definition of pci_id in ehci-pci.c; if you did 
> > then ehci-pci wouldn't bind to PCI controllers.
> > 
> > It may turn out that the best way to fix this is to include a quirk in 
> > ehci-pci.c to prevent it from binding to the Intel MID on-board EHCI 
> > controller.
> > 
> > Alan Stern
> > 
> 
> Then, it is strange. Do we need even two glue layer drivers for pci
> device? Look at usb/chipidea/ci_hdrc_pci.c it has pci_register_driver,
> and its host driver will call ehci_init_driver, it is definitely
> duplicated with usb/host/ehci-pci.c.

ehci-pci.c is a driver for a USB Host Controller, whereas ci_hdrc_pci.c 
is a driver for a USB Device Controller.

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux