From: Zbigniew Bodek <zbb@xxxxxxxxxxxx>
This commit adds checking whether clock-frequency property acquisition
has succeeded. Do not waste time to find baud factors if there is no
information about the desired bus frequency in dts.
[gregory.clement@xxxxxxxxxxxxxxxxxx: Reword the commit log]
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Zbigniew Bodek <zbb@xxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-mv64xxx.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 74f8fcb..de384a1 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -591,7 +591,11 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
goto out;
}
tclk = clk_get_rate(drv_data->clk);
- of_property_read_u32(np, "clock-frequency", &bus_freq);
+
+ rc = of_property_read_u32(np, "clock-frequency", &bus_freq);
+ if (rc)
+ goto out;
+
if (!mv64xxx_find_baud_factors(bus_freq, tclk,
&drv_data->freq_n, &drv_data->freq_m)) {
rc = -EINVAL;
--
1.8.1.2
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