1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/pwm/pwm-atmel-hlcdc.c b/drivers/pwm/pwm-atmel-hlcdc.c
index e7a785fadcdf..522f7075bb1a 100644
--- a/drivers/pwm/pwm-atmel-hlcdc.c
+++ b/drivers/pwm/pwm-atmel-hlcdc.c
@@ -64,6 +64,9 @@ static int atmel_hlcdc_pwm_config(struct pwm_chip *c,
 
         if (!chip->errata || !chip->errata->slow_clk_erratum) {
                 clk_freq = clk_get_rate(new_clk);
+                if (!clk_freq)
+                        return -EINVAL;
+
                 clk_period_ns = (u64)NSEC_PER_SEC * 256;
                 do_div(clk_period_ns, clk_freq);
         }
@@ -73,6 +76,9 @@ static int atmel_hlcdc_pwm_config(struct pwm_chip *c,
             clk_period_ns > period_ns) {
                 new_clk = hlcdc->sys_clk;
                 clk_freq = clk_get_rate(new_clk);
+                if (!clk_freq)
+                        return -EINVAL;
+
                 clk_period_ns = (u64)NSEC_PER_SEC * 256;
                 do_div(clk_period_ns, clk_freq);
         }