diff options
Diffstat (limited to 'drivers/clk/rockchip/clk-cpu.c')
| -rw-r--r-- | drivers/clk/rockchip/clk-cpu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c index 05b3d73bfefa..0e09684d43a5 100644 --- a/drivers/clk/rockchip/clk-cpu.c +++ b/drivers/clk/rockchip/clk-cpu.c @@ -124,9 +124,18 @@ static int rockchip_cpuclk_pre_rate_change(struct rockchip_cpuclk *cpuclk, struct clk_notifier_data *ndata) { const struct rockchip_cpuclk_reg_data *reg_data = cpuclk->reg_data; + const struct rockchip_cpuclk_rate_table *rate; unsigned long alt_prate, alt_div; unsigned long flags; + /* check validity of the new rate */ + rate = rockchip_get_cpuclk_settings(cpuclk, ndata->new_rate); + if (!rate) { + pr_err("%s: Invalid rate : %lu for cpuclk\n", + __func__, ndata->new_rate); + return -EINVAL; + } + alt_prate = clk_get_rate(cpuclk->alt_parent); spin_lock_irqsave(cpuclk->lock, flags); |