Re: [PATCH] staging: media: imx: initialize hs_settle to avoid warning

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On 4/18/23 10:41, Martin Kepplinger wrote:
> hi Hans,
> 
> thank you for the patch. please use get_maintainer.pl to find all email
> addresses to send this to. Sending this to linux-media only is
> incomplete.

Note that you do not appear if I do:

scripts/get_maintainer.pl drivers/staging/media/imx/imx8mq-mipi-csi2.c

Not sure why not. It might be because there is no entry in the MAINTAINERS
file for this specific driver.

Regards,

	Hans

> 
> other than that, the patch lgtm and if you resend, you can add
> 
> Reviewed-by: Martin Kepplinger <martink@xxxxxxxxx>
> 
> thank you again,
> 
>                             martin
> 
> 
> Am Dienstag, dem 18.04.2023 um 09:46 +0200 schrieb Hans Verkuil:
>> Initialize hs_settle to 0 to avoid this compiler warning:
>>
>> imx8mq-mipi-csi2.c: In function
>> 'imx8mq_mipi_csi_start_stream.part.0':
>> imx8mq-mipi-csi2.c:91:55: warning: 'hs_settle' may be used
>> uninitialized [-Wmaybe-uninitialized]
>>    91 | #define GPR_CSI2_1_S_PRG_RXHS_SETTLE(x) (((x) & 0x3f) << 2)
>>       |                                                       ^~
>> imx8mq-mipi-csi2.c:357:13: note: 'hs_settle' was declared here
>>   357 |         u32 hs_settle;
>>       |             ^~~~~~~~~
>>
>> It's a false positive, but it is too complicated for the compiler to
>> detect that.
>>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
>> ---
>> diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
>> b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
>> index 32700cb8bc4d..ca2efcc21efe 100644
>> --- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
>> +++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
>> @@ -354,7 +354,7 @@ static int imx8mq_mipi_csi_start_stream(struct
>> csi_state *state,
>>                                         struct v4l2_subdev_state
>> *sd_state)
>>  {
>>         int ret;
>> -       u32 hs_settle;
>> +       u32 hs_settle = 0;
>>
>>         ret = imx8mq_mipi_csi_sw_reset(state);
>>         if (ret)
> 
> 




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