Re: [PATCH v2 9/9] ASoC: tegra_sgtl5000: fix platform name vs. of_node assignement

From: Jon Hunter
Date: Wed Oct 17 2018 - 15:50:43 EST

On 17/10/2018 20:16, Mark Brown wrote:
> On Wed, Oct 17, 2018 at 02:28:22PM +0000, Marcel Ziswiler wrote:
>> Some questions:
>> - How exactly are devm allocations supposed to work concerning probe
>> deferrals?
> Probe deferrals are just normal probe errors, any devm_ allocated stuff
> gets unwound.
>> - Does or should the platform get cleared during a probe deferral
>> cycle?
>> - If so, why does that not work?
> Is something writing to static data when it should be writing to
> dynamically allocated data? That's what this sounds like, we shouldn't
> be modifying any static data and any data dynamically allocated during
> probe ought to be being discarded.

Marcel, it maybe worth looking at what happens in the 2nd call to
snd_soc_init_platform() following the probe deferral. Also pay attention
to the value of 'dai_link->platform_name' in snd_soc_init_platform() on
both 1st and 2nd call. Seems that on the 2nd time the function is called
the value is not NULL???