[RFC 07/19] xen/dts: Use unsigned int for MMIO and IRQ index

[Julien Grall <julien.grall@linaro.org>]

There is no reason to use signed integer for an index. Futhermore, this will
avoid possible issue when theses functions will be exposed to the guest
via new hypercalls.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
---
 xen/common/device_tree.c      |   10 +++++-----
 xen/include/xen/device_tree.h |    7 ++++---
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index f0b17a3..4736e0d 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -876,7 +876,7 @@ static const struct dt_bus *dt_match_bus(const struct dt_device_node *np)
 }
 
 static const __be32 *dt_get_address(const struct dt_device_node *dev,
-                                    int index, u64 *size,
+                                    unsigned index, u64 *size,
                                     unsigned int *flags)
 {
     const __be32 *prop;
@@ -1063,7 +1063,7 @@ bail:
 }
 
 /* dt_device_address - Translate device tree address and return it */
-int dt_device_get_address(const struct dt_device_node *dev, int index,
+int dt_device_get_address(const struct dt_device_node *dev, unsigned int index,
                           u64 *addr, u64 *size)
 {
     const __be32 *addrp;
@@ -1386,7 +1386,7 @@ fail:
     return -EINVAL;
 }
 
-int dt_device_get_raw_irq(const struct dt_device_node *device, int index,
+int dt_device_get_raw_irq(const struct dt_device_node *device, uint32_t index,
                           struct dt_raw_irq *out_irq)
 {
     const struct dt_device_node *p;
@@ -1394,7 +1394,7 @@ int dt_device_get_raw_irq(const struct dt_device_node *device, int index,
     u32 intsize, intlen;
     int res = -EINVAL;
 
-    dt_dprintk("dt_device_get_raw_irq: dev=%s, index=%d\n",
+    dt_dprintk("dt_device_get_raw_irq: dev=%s, index=%u\n",
                device->full_name, index);
 
     /* Get the interrupts property */
@@ -1445,7 +1445,7 @@ int dt_irq_translate(const struct dt_raw_irq *raw,
                         &out_irq->irq, &out_irq->type);
 }
 
-int dt_device_get_irq(const struct dt_device_node *device, int index,
+int dt_device_get_irq(const struct dt_device_node *device, uint32_t index,
                       struct dt_irq *out_irq)
 {
     struct dt_raw_irq raw;
diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index 25db076..e413447 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -502,7 +502,7 @@ const struct dt_device_node *dt_get_parent(const struct dt_device_node *node);
  * This function resolves an address, walking the tree, for a give
  * device-tree node. It returns 0 on success.
  */
-int dt_device_get_address(const struct dt_device_node *dev, int index,
+int dt_device_get_address(const struct dt_device_node *dev, unsigned int index,
                           u64 *addr, u64 *size);
 
 /**
@@ -532,7 +532,7 @@ unsigned int dt_number_of_address(const struct dt_device_node *device);
  * This function resolves an interrupt, walking the tree, for a given
  * device-tree node. It's the high level pendant to dt_device_get_raw_irq().
  */
-int dt_device_get_irq(const struct dt_device_node *device, int index,
+int dt_device_get_irq(const struct dt_device_node *device, unsigned int index,
                       struct dt_irq *irq);
 
 /**
@@ -544,7 +544,8 @@ int dt_device_get_irq(const struct dt_device_node *device, int index,
  * This function resolves an interrupt for a device, no translation is
  * made. dt_irq_translate can be called after.
  */
-int dt_device_get_raw_irq(const struct dt_device_node *device, int index,
+int dt_device_get_raw_irq(const struct dt_device_node *device,
+                          unsigned int index,
                           struct dt_raw_irq *irq);
 
 /**
-- 
1.7.10.4