[imx8qm]In low posibility, the __vb2_get_done_vb() will cost 2~3s continuously each time been called

[nsynet]

Our car IVI product is already saled for 2 years ,but a few customers have some complain:

In low posibility,the camera is very slow ,the frame rate is almost 1 or 2 frme per second.we debug and find the __vb2_get_done_vb() will cost 2~3s continuously each time when it happened.

below is the method to check the time used:

We find the __vb2_get_done_v() will cost 2010443 us,namely 2 seconds:

we are using IMX8QM linux kernel 4.14.98 baseline,the code and its log is attached ,can you help to give us some suggestion?

[Bio_TICFSL]

Hello,

Change your software to a new version:

https://www.nxp.com/design/design-center/software/embedded-software/i-mx-software/embedded-linux-for...

Regards

[nsynet]

Do you mean we upgrade our product kernel from 4.14.98 to  6.1.55_2.2.0,or just merge the patch to latest Linux 4.14.98_2.3.5 patch ?Thanks.