[alsa-devel] tabs versus space fill

[Peter Hsiang]

I noticed that in the latest version of the kernel (next), the formatting of the soc sound driver file max98088.c had been changed.  Someone had changed all the tabs to space-fill.  I thought the kernel coding standard encourages the use of tabs.  Is the use of space-fill the new formatting preference for the kernel?

I did not see this patch change on alsa-devel list.  
How do I find out where and when this was changed?

Thanks,

Peter