[PATCH] driver: provide dev_request_mem_resource_by_name() helper

[Ahmad Fatoum]

There are both dev_request_mem_resource() and dev_request_mem_region(),
which return the struct resource and a IOMEM(.start) respectively.

There is only dev_request_mem_region_by_name(), but
no dev_request_mem_resource_by_name(), so add the latter for symmetry.

Signed-off-by: Ahmad Fatoum <ahmad at a3f.at>
---
 drivers/base/driver.c | 12 ++++++++++--
 include/driver.h      |  5 +++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 3205bbc3c33b..6763bbc6f512 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -372,7 +372,7 @@ struct resource *dev_get_resource_by_name(struct device_d *dev,
 	return ERR_PTR(-ENOENT);
 }
 
-void __iomem *dev_request_mem_region_by_name(struct device_d *dev, const char *name)
+struct resource *dev_request_mem_resource_by_name(struct device_d *dev, const char *name)
 {
 	struct resource *res;
 
@@ -380,7 +380,15 @@ void __iomem *dev_request_mem_region_by_name(struct device_d *dev, const char *n
 	if (IS_ERR(res))
 		return ERR_CAST(res);
 
-	res = request_iomem_region(dev_name(dev), res->start, res->end);
+	return request_iomem_region(dev_name(dev), res->start, res->end);
+}
+EXPORT_SYMBOL(dev_request_mem_resource_by_name);
+
+void __iomem *dev_request_mem_region_by_name(struct device_d *dev, const char *name)
+{
+	struct resource *res;
+
+	res = dev_request_mem_resource_by_name(dev, name);
 	if (IS_ERR(res))
 		return ERR_CAST(res);
 
diff --git a/include/driver.h b/include/driver.h
index e2886d051d4f..0d43b3614863 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -214,6 +214,11 @@ void __iomem *dev_request_mem_region(struct device_d *dev, int num);
  */
 struct resource *dev_request_mem_resource(struct device_d *dev, int num);
 
+/*
+ * exlusively request resource 'name' for a device
+ */
+struct resource *dev_request_mem_resource_by_name(struct device_d *dev, const char *name);
+
 /*
  * exlusively request register base 'num' for a device
  * will return NULL on error
-- 
2.29.2