Re: [PATCH] spi: atmel: Fix crash when using more than 4 gpio CS

[Alexandre Belloni]

On 19/09/2019 17:03:15+0100, Mark Brown wrote:
> On Thu, Sep 19, 2019 at 05:38:47PM +0200, Gregory CLEMENT wrote:
> 
> > With this patch, when using a gpio CS, the hardware CS0 is always
> > used. Thanks to this, there is no more limitation for the number of
> > gpio CS we can use.
> 
> This is going to break any system where we use both a GPIO chip select
> and chip select 0.  Ideally we'd try to figure out an unused chip select
> to use here...

The point is that this use case is already broken and this patch fixes
the crash and is easily backportable.

Fixing the CS + gpio CS should probably be done in a separate patch.

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com