# \[PATCH v3 07/10\] powerpc/mpic: Don't open-code dcr\_resource\_start

- From: Kyle Moffett \<hidden\>
- Date: 2011-12-02 16:29:16 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2011/12/9467447
- Thread: https://ratatoskr.run/linuxppc-dev/2011/11/9467303/t.md

```text
Don't open-code the OpenFirmware "dcr-reg" property lookup trying to map
DCR resources.  This makes the code a bit easier to read.

Signed-off-by: Kyle Moffett <redacted>
---
 arch/powerpc/sysdev/mpic.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 6d42ad1..1e7584b 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -319,11 +319,8 @@ static void _mpic_map_dcr(struct mpic *mpic, struct device_node *node,
 			  struct mpic_reg_bank *rb,
 			  unsigned int offset, unsigned int size)
 {
-	const u32 *dbasep;
-
-	dbasep = of_get_property(node, "dcr-reg", NULL);
-
-	rb->dhost = dcr_map(node, *dbasep + offset, size);
+	phys_addr_t phys_addr = dcr_resource_start(node, 0);
+	rb->dhost = dcr_map(mpic->node, phys_addr + offset, size);
 	BUG_ON(!DCR_MAP_OK(rb->dhost));
 }
 
-- 
1.7.2.5
```