diff options
| -rw-r--r-- | drivers/clk/imx/clk-pfdv2.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c index de93ce73101b..f8707278aad9 100644 --- a/drivers/clk/imx/clk-pfdv2.c +++ b/drivers/clk/imx/clk-pfdv2.c @@ -139,6 +139,12 @@ static int clk_pfdv2_set_rate(struct clk_hw *hw, unsigned long rate, u32 val; u8 frac; + if (!rate) + return -EINVAL; + + /* PFD can NOT change rate without gating */ + WARN_ON(clk_pfdv2_is_enabled(hw)); + tmp = tmp * 18 + rate / 2; do_div(tmp, rate); frac = tmp; |