[ARM] omap: create a proper tree of clocks

Traditionally, we've tracked the parent/child relationships between
clk structures by setting the child's parent member to point at the
upstream clock.  As a result, when decending the tree, we have had
to scan all clocks to find the children.

Avoid this wasteful scanning by keeping a list of the clock's children.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 478ca660fff..38a7898d0ce 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -175,7 +175,7 @@ void omap2_init_clksel_parent(struct clk *clk)
                                                  clk->name, clks->parent->name,
                                                  ((clk->parent) ?
                                                   clk->parent->name : "NULL"));
-                                        clk->parent = clks->parent;
+                                        clk_reparent(clk, clks->parent);
                                 };
                                 found = 1;
                         }
@@ -780,7 +780,7 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
         if (clk->usecount > 0)
                 _omap2_clk_enable(clk);
 
-        clk->parent = new_parent;
+        clk_reparent(clk, new_parent);
 
         /* CLKSEL clocks follow their parents' rates, divided by a divisor */
         clk->rate = new_parent->rate;