[PATCH 5.15 382/917] media: imx258: Fix getting clock frequency

Greg Kroah-Hartman
2021-11-16T00:56:26Z

From: Sakari Ailus <sakari.ailus@linux.intel.com>

[ Upstream commit d170b0ea1760989fe8ac053bef83e61f3bf87992 ]

Obtain the clock frequency by reading the clock-frequency property if
there's no clock.

Fixes: 9fda25332c4b ("media: i2c: imx258: get clock from device properties and enable it via runtime PM")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/i2c/imx258.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index 81cdf37216ca7..c249507aa2dbc 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -1260,18 +1260,18 @@ static int imx258_probe(struct i2c_client *client)
return -ENOMEM;

imx258->clk = devm_clk_get_optional(&client->dev, NULL);
+ if (IS_ERR(imx258->clk))
+ return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
+ "error getting clock\n");
if (!imx258->clk) {
dev_dbg(&client->dev,
"no clock provided, using clock-frequency property\n");

device_property_read_u32(&client->dev, "clock-frequency", &val);
- if (val != IMX258_INPUT_CLOCK_FREQ)
- return -EINVAL;
- } else if (IS_ERR(imx258->clk)) {
- return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
- "error getting clock\n");
+ } else {
+ val = clk_get_rate(imx258->clk);
}
- if (clk_get_rate(imx258->clk) != IMX258_INPUT_CLOCK_FREQ) {
+ if (val != IMX258_INPUT_CLOCK_FREQ) {
dev_err(&client->dev, "input clock frequency not supported\n");
return -EINVAL;
}
--
2.33.0