diff options
author | Giulio Benetti <giulio.benetti@benettiengineering.com> | 2020-01-17 13:06:41 +0100 |
---|---|---|
committer | Lukasz Majewski <lukma@denx.de> | 2020-01-26 21:57:08 +0100 |
commit | d37ecaba88cc7482d9481a6ee7de84ff454ede4a (patch) | |
tree | b507dcfa7009378c80e033acc2cb8b225c885ebc | |
parent | 3391e7772933da74b488c761a2e444b9899cbd2a (diff) |
clk: imx: pllv3: fix potential 'divide by zero' in av_get_rate()
Guard 'mfd==0' to prevent 'divide by zero' issue in
clk_pplv3_av_get_rate(). If it is 0, let's return with EIO since mfd
should never be 0 at all.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
-rw-r--r-- | drivers/clk/imx/clk-pllv3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c index a540a5b68c..72e6750615 100644 --- a/drivers/clk/imx/clk-pllv3.c +++ b/drivers/clk/imx/clk-pllv3.c @@ -163,6 +163,9 @@ static ulong clk_pllv3_av_get_rate(struct clk *clk) u32 div = readl(pll->base) & pll->div_mask; u64 temp64 = (u64)parent_rate; + if (mfd == 0) + return -EIO; + temp64 *= mfn; do_div(temp64, mfd); |