Add defines for the standard PCI legacy address space sizes, replacing the raw literals used by the legacy sysfs attributes.
Then, replace open-coded values with the newly added macros. No functional changes intended. Suggested-by: Ilpo Järvinen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> --- drivers/pci/pci-sysfs.c | 4 ++-- include/linux/pci.h | 5 +++++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 3a7bbb00ca60..ad8ee192c94b 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1055,7 +1055,7 @@ void pci_create_legacy_files(struct pci_bus *b) sysfs_bin_attr_init(b->legacy_io); b->legacy_io->attr.name = "legacy_io"; - b->legacy_io->size = 0xffff; + b->legacy_io->size = PCI_LEGACY_IO_SIZE; b->legacy_io->attr.mode = 0600; b->legacy_io->read = pci_read_legacy_io; b->legacy_io->write = pci_write_legacy_io; @@ -1072,7 +1072,7 @@ void pci_create_legacy_files(struct pci_bus *b) b->legacy_mem = b->legacy_io + 1; sysfs_bin_attr_init(b->legacy_mem); b->legacy_mem->attr.name = "legacy_mem"; - b->legacy_mem->size = 1024*1024; + b->legacy_mem->size = PCI_LEGACY_MEM_SIZE; b->legacy_mem->attr.mode = 0600; b->legacy_mem->mmap = pci_mmap_legacy_mem; /* See pci_create_attr() for motivation */ diff --git a/include/linux/pci.h b/include/linux/pci.h index f6f55005f82d..6b630bac8c08 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -27,6 +27,7 @@ #include <linux/mod_devicetable.h> #include <linux/types.h> +#include <linux/sizes.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/list.h> @@ -1167,6 +1168,10 @@ enum { /* These external functions are only available when PCI support is enabled */ #ifdef CONFIG_PCI +/* PCI legacy I/O port and memory address space sizes. */ +#define PCI_LEGACY_IO_SIZE (SZ_64K - 1) +#define PCI_LEGACY_MEM_SIZE SZ_1M + extern unsigned int pci_flags; static inline void pci_set_flags(int flags) { pci_flags = flags; } -- 2.54.0
