diff options
| author |   Thomas Petazzoni <thomas.petazzoni@bootlin.com> | 2018-04-06 16:55:35 +0200 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-06-27 18:11:10 +0100 |
| commit | 248d4e59616c632f37f04c233eec6d5008384926 (patch) | |
| tree | c0118a41696a66ee3177b28ef8280a91ab077201 /drivers/pci/controller/pci-aardvark.c | |
| parent | Linux 4.18-rc1 (diff) | |
| download | wireguard-linux-248d4e59616c632f37f04c233eec6d5008384926.tar.xz wireguard-linux-248d4e59616c632f37f04c233eec6d5008384926.zip | |
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>
Diffstat (limited to 'drivers/pci/controller/pci-aardvark.c')
| -rw-r--r-- | drivers/pci/controller/pci-aardvark.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index d3172d5d3d35..7b363437d851 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -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) |