diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2016-01-10 07:53:55 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-01-10 07:53:55 -0800 |
| commit | 8b63b6bfc1a551acf154061699028c7032d7890c (patch) | |
| tree | 16882e9bc9e35eacb870a6d8a71617e579c4ffdc /kernel/resource.c | |
| parent | e07ecd76d4db7bda1e9495395b2110a3fe28845a (diff) | |
| parent | 55f5560d8c18fe33fc169f8d244a9247dcac7612 (diff) | |
Merge branch 'for-4.5/block-dax' into for-4.5/libnvdimm
Diffstat (limited to 'kernel/resource.c')
| -rw-r--r-- | kernel/resource.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index f150dbbe6f62..09c0597840b0 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -1498,8 +1498,15 @@ int iomem_is_exclusive(u64 addr) break; if (p->end < addr) continue; - if (p->flags & IORESOURCE_BUSY && - p->flags & IORESOURCE_EXCLUSIVE) { + /* + * A resource is exclusive if IORESOURCE_EXCLUSIVE is set + * or CONFIG_IO_STRICT_DEVMEM is enabled and the + * resource is busy. + */ + if ((p->flags & IORESOURCE_BUSY) == 0) + continue; + if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM) + || p->flags & IORESOURCE_EXCLUSIVE) { err = 1; break; } |