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PCI: aardvark: Introduce an advk_pcie_valid_device() helper 

In other to mimic other PCIe host controller drivers, introduce an
advk_pcie_valid_device() helper, used in the configuration read/write
functions.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[lorenzo.pieralisi@arm.com: updated host->controller dir move]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Thomas Petazzoni 2018-04-06 16:55:35 +02:00 committed by Lorenzo Pieralisi
parent ce397d215c
commit 248d4e5961
1 changed files with 11 additions and 2 deletions
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13
drivers/pci/controller/pci-aardvark.c
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@ -433,6 +433,15 @@ static int advk_pcie_wait_pio(struct advk_pcie *pcie)
return -ETIMEDOUT;
}
static bool advk_pcie_valid_device(struct advk_pcie *pcie, struct pci_bus *bus,
int devfn)
{
if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0)
return false;
return true;
}
static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
int where, int size, u32 *val)
{
@ -440,7 +449,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
u32 reg;
int ret;
if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) {
if (!advk_pcie_valid_device(pcie, bus, devfn)) {
*val = 0xffffffff;
return PCIBIOS_DEVICE_NOT_FOUND;
}
@ -494,7 +503,7 @@ static int advk_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
int offset;
int ret;
if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0)
if (!advk_pcie_valid_device(pcie, bus, devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
if (where % size)