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-rw-r--r--target/linux/ramips/files/arch/mips/pci/pci-rt288x.c34
1 files changed, 22 insertions, 12 deletions
diff --git a/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c b/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
index 4894882169..2fccd7bb73 100644
--- a/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
+++ b/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
@@ -80,12 +80,17 @@ static int rt2880_pci_config_read(struct pci_bus *bus, unsigned int devfn,
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
spin_unlock_irqrestore(&rt2880_pci_lock, flags);
- if (size == 1)
+ switch (size) {
+ case 1:
*val = (data >> ((where & 3) << 3)) & 0xff;
- else if (size == 2)
+ break;
+ case 2:
*val = (data >> ((where & 3) << 3)) & 0xffff;
- else
+ break;
+ case 4:
*val = data;
+ break;
+ }
return PCIBIOS_SUCCESSFUL;
}
@@ -97,16 +102,21 @@ static int rt2880_pci_config_write(struct pci_bus *bus, unsigned int devfn,
u32 data = 0;
spin_lock_irqsave(&rt2880_pci_lock, flags);
- if (size == 4) {
- data = val;
- } else {
+
+ switch (size) {
+ case 1:
+ config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
+ data = (data & ~(0xff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+ break;
+ case 2:
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
- if (size == 1)
- data = (data & ~(0xff << ((where & 3) << 3))) |
- (val << ((where & 3) << 3));
- else if (size == 2)
- data = (data & ~(0xffff << ((where & 3) << 3))) |
- (val << ((where & 3) << 3));
+ data = (data & ~(0xffff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+ break;
+ case 4:
+ data = val;
+ break;
}
config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data);