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| author | Yaowei Bai <baiyaowei@cmss.chinamobile.com> | 2018-02-06 15:41:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 18:32:47 -0800 |
| commit | 9825b451f95a74b33c65069106fc5a6bb8e33aa9 (patch) | |
| tree | 61b0d797494a2c12303a91baed81dfa6b0ad85ce | |
| parent | 77ef80c65ab72e57cfc273b2dd1d48a282b75146 (diff) | |
| download | linux-9825b451f95a74b33c65069106fc5a6bb8e33aa9.tar.gz linux-9825b451f95a74b33c65069106fc5a6bb8e33aa9.tar.bz2 linux-9825b451f95a74b33c65069106fc5a6bb8e33aa9.zip | |
kernel/resource: iomem_is_exclusive can be boolean
Make iomem_is_exclusive return bool due to this particular function only
using either one or zero as its return value.
No functional change.
Link: http://lkml.kernel.org/r/1513266622-15860-5-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/ioport.h | 2 | ||||
| -rw-r--r-- | kernel/resource.c | 10 |
2 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 93b4183cf53d..da0ebaec25f0 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -265,7 +265,7 @@ extern struct resource * __devm_request_region(struct device *dev, extern void __devm_release_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n); extern int iomem_map_sanity_check(resource_size_t addr, unsigned long size); -extern int iomem_is_exclusive(u64 addr); +extern bool iomem_is_exclusive(u64 addr); extern int walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages, diff --git a/kernel/resource.c b/kernel/resource.c index 54ba6de3757c..a269b9a1e834 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -1563,17 +1563,17 @@ static int strict_iomem_checks; /* * check if an address is reserved in the iomem resource tree - * returns 1 if reserved, 0 if not reserved. + * returns true if reserved, false if not reserved. */ -int iomem_is_exclusive(u64 addr) +bool iomem_is_exclusive(u64 addr) { struct resource *p = &iomem_resource; - int err = 0; + bool err = false; loff_t l; int size = PAGE_SIZE; if (!strict_iomem_checks) - return 0; + return false; addr = addr & PAGE_MASK; @@ -1596,7 +1596,7 @@ int iomem_is_exclusive(u64 addr) continue; if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM) || p->flags & IORESOURCE_EXCLUSIVE) { - err = 1; + err = true; break; } } |