From 9e00caaea14b90a788c17a2e0c32108a3d7008ec Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Fri, 22 Jan 2016 13:58:42 +0100 Subject: [PATCH] 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 Reviewed-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/pci_io.h | 1 + arch/s390/pci/pci.c | 10 +++------- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/arch/s390/include/asm/pci_io.h b/arch/s390/include/asm/pci_io.h index 67f7ddd4617d..27dbc1129dfc 100644 --- a/arch/s390/include/asm/pci_io.h +++ b/arch/s390/include/asm/pci_io.h @@ -21,6 +21,7 @@ struct zpci_iomap_entry { extern struct zpci_iomap_entry *zpci_iomap_start; +#define ZPCI_ADDR(idx) (ZPCI_IOMAP_ADDR_BASE | ((u64) idx << 48)) #define ZPCI_IDX(addr) \ (((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> 48) #define ZPCI_OFFSET(addr) \ diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 11d4f277e9f6..3942348317da 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -265,7 +265,6 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev, unsigned long max) { struct zpci_dev *zdev = to_zpci(pdev); - u64 addr; int idx; if ((bar & 7) != bar) @@ -284,8 +283,7 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev, 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 @@ EXPORT_SYMBOL(pci_iomap); 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 @@ static int zpci_setup_bus_resources(struct zpci_dev *zdev, 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); -- 2.39.2