diff options
| author | Axel Lin <axel.lin@ingics.com> | 2016-04-13 08:54:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-28 16:46:32 +0000 |
| commit | 37019ca346e02ee15888d04bb1645439fa560dc3 (patch) | |
| tree | 022583a687a2138b47cd8d5238ad13856dc24788 | |
| parent | 444a01824032f4aa6d3e27635d802f220bff2697 (diff) | |
i2c: sun6i-p2wi: Prevent potential division by zero
[ Upstream commit 5ac61d26b8baff5b2e5a9f3dc1ef63297e4b53e7 ]
Make sure we don't OOPS in case clock-frequency is set to 0 in a DT. The
variable set here is later used as a divisor.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/i2c/busses/i2c-sun6i-p2wi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-sun6i-p2wi.c b/drivers/i2c/busses/i2c-sun6i-p2wi.c index 7c07ce116e38..540c33f4e350 100644 --- a/drivers/i2c/busses/i2c-sun6i-p2wi.c +++ b/drivers/i2c/busses/i2c-sun6i-p2wi.c @@ -202,6 +202,11 @@ static int p2wi_probe(struct platform_device *pdev) return -EINVAL; } + if (clk_freq == 0) { + dev_err(dev, "clock-frequency is set to 0 in DT\n"); + return -EINVAL; + } + if (of_get_child_count(np) > 1) { dev_err(dev, "P2WI only supports one slave device\n"); return -EINVAL; |