diff options
Diffstat (limited to 'arch/arm/plat-omap/clock.c')
| -rw-r--r-- | arch/arm/plat-omap/clock.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 08baa18497b2..2e0614552ac8 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -144,13 +144,16 @@ int clk_set_parent(struct clk *clk, struct clk *parent) return ret; spin_lock_irqsave(&clockfw_lock, flags); - if (arch_clock->clk_set_parent) - ret = arch_clock->clk_set_parent(clk, parent); - if (ret == 0) { - if (clk->recalc) - clk->rate = clk->recalc(clk); - propagate_rate(clk); - } + if (clk->usecount == 0) { + if (arch_clock->clk_set_parent) + ret = arch_clock->clk_set_parent(clk, parent); + if (ret == 0) { + if (clk->recalc) + clk->rate = clk->recalc(clk); + propagate_rate(clk); + } + } else + ret = -EBUSY; spin_unlock_irqrestore(&clockfw_lock, flags); return ret; |