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authorPaul Mundt <lethal@linux-sh.org>2010-08-20 20:26:41 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-08-20 20:26:41 +0900
commit65c23f54c01fabae171d54c0e78df354b3709b93 (patch)
treec661e4e44604849078dd83ba6f26e9f4fe665e12 /arch
parent53178d71b9f2d5c96bfcd2dd2c4b99c4e95a77d5 (diff)
downloadlinux-65c23f54c01fabae171d54c0e78df354b3709b93.tar.bz2
sh: Relax devfn constraints for SH7786 PCIe.
SH7786 PCIe has 1 slot per port, but no specific restriction on function. Relax the devfn restriction and look to the slot number instead when configured as a root complex. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/drivers/pci/ops-sh7786.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/sh/drivers/pci/ops-sh7786.c b/arch/sh/drivers/pci/ops-sh7786.c
index 57134a38686a..79a5ddae733d 100644
--- a/arch/sh/drivers/pci/ops-sh7786.c
+++ b/arch/sh/drivers/pci/ops-sh7786.c
@@ -25,14 +25,15 @@ static int sh7786_pcie_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, int where, u32 *data)
{
struct pci_channel *chan = bus->sysdata;
- int dev, func;
+ int dev, func, type;
dev = PCI_SLOT(devfn);
func = PCI_FUNC(devfn);
+ type = !!bus->parent;
if (bus->number > 255 || dev > 31 || func > 7)
return PCIBIOS_FUNC_NOT_SUPPORTED;
- if (devfn)
+ if (bus->parent == NULL && dev)
return PCIBIOS_DEVICE_NOT_FOUND;
/* Clear errors */
@@ -43,13 +44,7 @@ static int sh7786_pcie_config_access(unsigned char access_type,
(func << 16) | (where & ~3), SH4A_PCIEPAR);
/* Enable the configuration access */
- if (bus->number) {
- /* Type 1 */
- pci_write_reg(chan, (1 << 31) | (1 << 8), SH4A_PCIEPCTLR);
- } else {
- /* Type 0 */
- pci_write_reg(chan, (1 << 31), SH4A_PCIEPCTLR);
- }
+ pci_write_reg(chan, (1 << 31) | (type << 8), SH4A_PCIEPCTLR);
/* Check for errors */
if (pci_read_reg(chan, SH4A_PCIEERRFR) & 0x10)