Messages in this thread | | | Date | Wed, 29 Apr 2015 20:56:26 +0200 | Subject | Re: [linux-sunxi] [PATCH 2/3] spidev: Add DT binding example. | From | Geert Uytterhoeven <> |
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On Wed, Apr 29, 2015 at 8:37 PM, Michal Suchanek <hramrach@gmail.com> wrote: > I am using a version of Maxime's patch myself right now. It does not > seem it's going to be include in the kernel any time soon, however. > > FWIW I added the ability to open any CS, even those claimed by kernel > drivers. This addresses any potential race of spidev binding before > the actual driver but has the potential to introduce some subtle bugs > when you open and reconfigure a CS used by a kernel driver or send > some commands that upset the device.
Uh, that sounds dangerous.
Perhaps you can add some safety net, before user space can access them, cfr. /sys/class/gpio/export?
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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