[PATCH] When snd_soc_card_jack_new is not called or the call fails, calling this function causes a null pointer access

[Mark Brown]

On Tue, Jul 14, 2020 at 10:30:36PM +0800, xingxing qiao wrote:

>  unsigned int sync = 0;
>  int enable;
>  
> -if (!jack)

This is actually worse than your previous posting - it's got HTML all
through it :(  git send-email is typically the easiest way to send
things.

Also please note my comment about needing a subject line in a similar
style to those in existing commits you can see in git.
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