s390/pci: provide ZPCI_ADDR macro
Provide and use a ZPCI_ADDR macro as the complement of ZPCI_IDX
to get rid of some constants in the code.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 11d4f27..3942348 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -265,7 +265,6 @@
unsigned long max)
{
struct zpci_dev *zdev = to_zpci(pdev);
- u64 addr;
int idx;
if ((bar & 7) != bar)
@@ -284,8 +283,7 @@
BUG_ON(!zpci_iomap_start[idx].count);
spin_unlock(&zpci_iomap_lock);
- addr = ZPCI_IOMAP_ADDR_BASE | ((u64) idx << 48);
- return (void __iomem *) addr + offset;
+ return (void __iomem *) ZPCI_ADDR(idx) + offset;
}
EXPORT_SYMBOL(pci_iomap_range);
@@ -297,9 +295,8 @@
void pci_iounmap(struct pci_dev *pdev, void __iomem *addr)
{
- unsigned int idx;
+ unsigned int idx = ZPCI_IDX(addr);
- idx = (((__force u64) addr) & ~ZPCI_IOMAP_ADDR_BASE) >> 48;
spin_lock(&zpci_iomap_lock);
/* Detect underrun */
BUG_ON(!zpci_iomap_start[idx].count);
@@ -611,8 +608,7 @@
if (zdev->bars[i].val & 4)
flags |= IORESOURCE_MEM_64;
- addr = ZPCI_IOMAP_ADDR_BASE + ((u64) entry << 48);
-
+ addr = ZPCI_ADDR(entry);
size = 1UL << zdev->bars[i].size;
res = __alloc_res(zdev, addr, size, flags);