Add sanity checks for fields that could cause division by zero. Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> --- drivers/media/i2c/ccs-pll.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/i2c/ccs-pll.c b/drivers/media/i2c/ccs-pll.c index e3a6493fd601..420d2c4d7b2c 100644 --- a/drivers/media/i2c/ccs-pll.c +++ b/drivers/media/i2c/ccs-pll.c @@ -421,6 +421,15 @@ int ccs_pll_calculate(struct device *dev, const struct ccs_pll_limits *lim, pll->vt_lanes = 1; } + if (!pll->op_lanes || !pll->vt_lanes || !pll->bits_per_pixel || + !pll->ext_clk_freq_hz || !pll->link_freq || !pll->scale_m || + !op_lim_fr->min_pll_ip_clk_freq_hz || + !op_lim_fr->max_pll_ip_clk_freq_hz || + !op_lim_fr->min_pll_op_clk_freq_hz || + !op_lim_fr->max_pll_op_clk_freq_hz || + !op_lim_bk->max_sys_clk_div || !op_lim_fr->max_pll_multiplier) + return -EINVAL; + /* * Make sure op_pix_clk_div will be integer --- unless flexible * op_pix_clk_div is supported -- 2.27.0
