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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-08-04 12:58:30 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-07 15:58:01 +0100 |
| commit | d7172c0ebc06b6a363db96fd2fcbd1008f307e4c (patch) | |
| tree | 89c582affe5fd91c6cd28693188a7fad723dd0e9 /drivers/media | |
| parent | media: ccs-pll: Add support flexible OP PLL pixel clock divider (diff) | |
| download | linux-d7172c0ebc06b6a363db96fd2fcbd1008f307e4c.tar.xz linux-d7172c0ebc06b6a363db96fd2fcbd1008f307e4c.zip | |
media: ccs-pll: Add sanity checks
Add sanity checks for fields that could cause division by zero.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/ccs-pll.c | 9 |
1 files changed, 9 insertions, 0 deletions
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 |