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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2018-06-12 03:01:07 +0300
committerRob Herring <robh@kernel.org>2018-07-10 17:08:57 +0300
commitb01dcdd86e8c20599ee9293392d6fef8397fbc5d (patch)
tree7d455bf2b944356432f2aa39144ef37d9c90db7d /drivers/of
parentb7394b7f5870234b77bf60224eb543a1b2d038a2 (diff)
downloadlinux-b01dcdd86e8c20599ee9293392d6fef8397fbc5d.tar.xz
drivers/of: Make of_io_request_and_map() "name" argument optional
These days of_address_to_resource() puts a reasonable name in the resource struct, thus make the "name" argument an optional override. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/address.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 53349912ac75..7ddbf0a1ab86 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -846,7 +846,7 @@ EXPORT_SYMBOL(of_iomap);
* for a given device_node
* @device: the device whose io range will be mapped
* @index: index of the io range
- * @name: name of the resource
+ * @name: name "override" for the memory region request or NULL
*
* Returns a pointer to the requested and mapped memory or an ERR_PTR() encoded
* error code on failure. Usage example:
@@ -856,7 +856,7 @@ EXPORT_SYMBOL(of_iomap);
* return PTR_ERR(base);
*/
void __iomem *of_io_request_and_map(struct device_node *np, int index,
- const char *name)
+ const char *name)
{
struct resource res;
void __iomem *mem;
@@ -864,6 +864,8 @@ void __iomem *of_io_request_and_map(struct device_node *np, int index,
if (of_address_to_resource(np, index, &res))
return IOMEM_ERR_PTR(-EINVAL);
+ if (!name)
+ name = res.name;
if (!request_mem_region(res.start, resource_size(&res), name))
return IOMEM_ERR_PTR(-EBUSY);