omap: clock: Check for enable/disable ops support

Check if enable/disable operations are supported for a given
clock node before attempting to call them.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 9 insertions, 5 deletions

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index e9625fcf6390..b1875965bb51 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -261,7 +261,8 @@ void omap2_clk_disable(struct clk *clk)
 
         pr_debug("clock: %s: disabling in hardware\n", clk->name);
 
-        clk->ops->disable(clk);
+        if (clk->ops && clk->ops->disable)
+                clk->ops->disable(clk);
 
         if (clk->clkdm)
                 clkdm_clk_disable(clk->clkdm, clk);
@@ -312,10 +313,13 @@ int omap2_clk_enable(struct clk *clk)
                 }
         }
 
-        ret = clk->ops->enable(clk);
-        if (ret) {
-                WARN(1, "clock: %s: could not enable: %d\n", clk->name, ret);
-                goto oce_err3;
+        if (clk->ops && clk->ops->enable) {
+                ret = clk->ops->enable(clk);
+                if (ret) {
+                        WARN(1, "clock: %s: could not enable: %d\n",
+                             clk->name, ret);
+                        goto oce_err3;
+                }
         }
 
         return 0;