drm/rockchip: vop: fixup plane zpos

[firefly-linux-kernel-4.4.55.git] / drivers / of / irq.c

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 902b89be7217137726be7eb1ab19263c0372635a..72a2c1969646c73db5c657f284f7941eb275fc0c 100644 (file)
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -53,7 +53,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
  * Returns a pointer to the interrupt parent node, or NULL if the interrupt
  * parent could not be determined.
  */
-static struct device_node *of_irq_find_parent(struct device_node *child)
+struct device_node *of_irq_find_parent(struct device_node *child)
 {
        struct device_node *p;
        const __be32 *parp;
@@ -77,6 +77,7 @@ static struct device_node *of_irq_find_parent(struct device_node *child)
 
        return p;
 }
+EXPORT_SYMBOL_GPL(of_irq_find_parent);
 
 /**
  * of_irq_parse_raw - Low level interrupt tree parsing
@@ -635,6 +636,13 @@ static u32 __of_msi_map_rid(struct device *dev, struct device_node **np,
                msi_base = be32_to_cpup(msi_map + 2);
                rid_len = be32_to_cpup(msi_map + 3);
 
+               if (rid_base & ~map_mask) {
+                       dev_err(parent_dev,
+                               "Invalid msi-map translation - msi-map-mask (0x%x) ignores rid-base (0x%x)\n",
+                               map_mask, rid_base);
+                       return rid_out;
+               }
+
                msi_controller_node = of_find_node_by_phandle(phandle);
 
                matched = (masked_rid >= rid_base &&
@@ -654,7 +662,7 @@ static u32 __of_msi_map_rid(struct device *dev, struct device_node **np,
        if (!matched)
                return rid_out;
 
-       rid_out = masked_rid + msi_base;
+       rid_out = masked_rid - rid_base + msi_base;
        dev_dbg(dev,
                "msi-map at: %s, using mask %08x, rid-base: %08x, msi-base: %08x, length: %08x, rid: %08x -> %08x\n",
                dev_name(parent_dev), map_mask, rid_base, msi_base,