[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, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c
index 4564ae32ae02..1a885976c257 100644
--- a/arch/arm/mach-omap2/clock24xx.c
+++ b/arch/arm/mach-omap2/clock24xx.c
@@ -718,6 +718,9 @@ int __init omap2_clk_init(void)
         omap2_sys_clk_recalc(&sys_ck);
         propagate_rate(&sys_ck);
 
+        for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
+                clk_init_one(c->lk.clk);
+
         cpu_mask = 0;
         if (cpu_is_omap2420())
                 cpu_mask |= CK_242X;