On Mon, Jan 01, 2018 at 02:37:49PM +0100, Linus Walleij wrote: > The non-generic bitbang was a feature where a platform could optimize > SPI bit-banging by inlining the routines to hammer GPIO lines into > the GPIO bitbanging driver as direct register writes using a custom > set of GPIO library calls. > It does not work with multiplatform concepts, violates everything > about how GPIO is made generic and is just generally a bad idea, > even on legacy system. Also there is no single user in the entire > kernel (for good reasons). > Delete the remnants of this optimization. What's the positive reason for removing this? I'd not anticipate people doing this upstream but it seems like a totally valid thing to do on product. It's just compiling out the gpiolib calls so it never looked like too big a maintanence overhead.
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