On 11/02/2020 16:39, Guenter Roeck wrote:
> On Tue, Feb 11, 2020 at 04:20:59PM +0000, Colin King wrote:
>> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>>
>> Currently the resource pointer ret is uninitialized and it is
>> being dereferenced when printing out a debug message. Fix this
>> by fetching the resource and assigning pointer res. It is
>> a moot point that we sanity check for a null res since a successful
>> call to devm_platform_ioremap_resource has already occurred so
>> in theory it should never be non-null.
>>
>> Addresses-Coverity: ("Uninitialized pointer read")
>> Fixes: 690dd9ce04f6 ("hwmon: Support ADI Fan Control IP")
>> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> This has already been fixed by removing the message (and the
> then unused variable). The message was useless anyway since
> it printed the remapped address with %p.
>
> Guenter
OK, thanks. My static anaylsis can't keep up!
>
>> ---
>> drivers/hwmon/axi-fan-control.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/hwmon/axi-fan-control.c b/drivers/hwmon/axi-fan-control.c
>> index 8041ba7cc152..36e0d060510a 100644
>> --- a/drivers/hwmon/axi-fan-control.c
>> +++ b/drivers/hwmon/axi-fan-control.c
>> @@ -415,6 +415,9 @@ static int axi_fan_control_probe(struct platform_device *pdev)
>> if (!ctl->clk_rate)
>> return -EINVAL;
>>
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + if (!res)
>> + return -EINVAL;
>> dev_dbg(&pdev->dev, "Re-mapped from 0x%08llX to %p\n",
>> (unsigned long long)res->start, ctl->base);
>>
>> --
>> 2.25.0
>>
