aboutsummaryrefslogtreecommitdiff
path: root/include/linux/io-mapping.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/io-mapping.h')
-rw-r--r--include/linux/io-mapping.h17
1 files changed, 12 insertions, 5 deletions
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 0adb0f91568..97eb928b492 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -49,23 +49,30 @@ static inline struct io_mapping *
io_mapping_create_wc(resource_size_t base, unsigned long size)
{
struct io_mapping *iomap;
-
- if (!is_io_mapping_possible(base, size))
- return NULL;
+ pgprot_t prot;
iomap = kmalloc(sizeof(*iomap), GFP_KERNEL);
if (!iomap)
- return NULL;
+ goto out_err;
+
+ if (iomap_create_wc(base, size, &prot))
+ goto out_free;
iomap->base = base;
iomap->size = size;
- iomap->prot = pgprot_writecombine(__pgprot(__PAGE_KERNEL));
+ iomap->prot = prot;
return iomap;
+
+out_free:
+ kfree(iomap);
+out_err:
+ return NULL;
}
static inline void
io_mapping_free(struct io_mapping *mapping)
{
+ iomap_free(mapping->base, mapping->size);
kfree(mapping);
}