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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>
This commit is contained in:
Rajendra Nayak 2011-02-25 15:48:36 -07:00 committed by Paul Walmsley
parent 4da71ae607
commit 6c52f32dcf
1 changed files with 9 additions and 5 deletions
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14
arch/arm/mach-omap2/clock.c
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@ -261,7 +261,8 @@ void omap2_clk_disable(struct clk *clk)
pr_debug("clock: %s: disabling in hardware\n", clk->name); 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) if (clk->clkdm)
clkdm_clk_disable(clk->clkdm, clk); clkdm_clk_disable(clk->clkdm, clk);
@ -312,10 +313,13 @@ int omap2_clk_enable(struct clk *clk)
} }
} }
ret = clk->ops->enable(clk); if (clk->ops && clk->ops->enable) {
if (ret) { ret = clk->ops->enable(clk);
WARN(1, "clock: %s: could not enable: %d\n", clk->name, ret); if (ret) {
goto oce_err3; WARN(1, "clock: %s: could not enable: %d\n",
clk->name, ret);
goto oce_err3;
}
} }
return 0; return 0;