clk: cache parent clocks only for muxes

caching parent clocks makes sense only when a clock has more
than one parent (mux clocks).
Avoid doing this for every other clock.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[mturquette@linaro.org: removed extra parentheses]
Signed-off-by: Mike Turquette <mturquette@linaro.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 9a1eb0cfa95f..46317cbc088f 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1235,8 +1235,8 @@ int __clk_init(struct device *dev, struct clk *clk)
          * If clk->parents is not NULL we skip this entire block.  This allows
          * for clock drivers to statically initialize clk->parents.
          */
-        if (clk->num_parents && !clk->parents) {
-                clk->parents = kmalloc((sizeof(struct clk*) * clk->num_parents),
+        if (clk->num_parents > 1 && !clk->parents) {
+                clk->parents = kzalloc((sizeof(struct clk*) * clk->num_parents),
                                 GFP_KERNEL);
                 /*
                  * __clk_lookup returns NULL for parents that have not been