On Wednesday, January 06, 2016 at 09:53:17 PM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.este...@nxp.com>
>
> Since commit ff3e077bd2 ("dm: pci: Add a uclass for PCI") the following
> error message is seen:
>
> => pci 0
> Scanning PCI devices on bus 0
> BusDevFun VendorId DeviceId Device Class Sub-Class
> _____________________________________________________________
> 00.01.00 0x16c3 0xabcd Bridge device 0x04
> Cannot read bus configuration: -1
>
> We can avoid this error by using the same approach as done in the
> linux kernel PCI designware driver: (drivers/pci/host/pcie-designware.c)
>
> static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
> int size, u32 *val)
> {
> struct pcie_port *pp = bus->sysdata;
> int ret;
>
> if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) {
> *val = 0xffffffff;
> return PCIBIOS_DEVICE_NOT_FOUND;
> }
>
> ,where PCIBIOS_DEVICE_NOT_FOUND is returned when an invalid address
> is given.
>
> Signed-off-by: Fabio Estevam <fabio.este...@nxp.com>
Acked-by: Marek Vasut <ma...@denx.de>
Best regards,
Marek Vasut
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