[PATCH 1/3] mfd: always assign of_node in mfd_add_device()
lee.jones at linaro.org
Mon Dec 16 03:12:42 EST 2013
On Fri, 13 Dec 2013, Stephen Warren wrote:
> On 12/11/2013 02:24 AM, Lee Jones wrote:
> >> From: Stephen Warren <swarren at nvidia.com>
> >> mfd_add_device() assigns .of_node in the device objects it creates only
> >> if the mfd_cell for the device has the .of_compatible field set and the
> >> DT node for the top-level MFD device contains a child whose compatible
> >> property matches the cell's .of_compatible field.
> >> This leaves .of_node unset in many cases. When this happens, entries in
> >> the DT /aliases property which refer to the top-level MFD DT node will
> >> never match the MFD child devices, hence causing the requested alias not
> >> to be honored.
> >> Solve this by setting each MFD child device's .of_node equal to the top-
> >> level MFD device's .of_node field in the cases where it would otherwise
> >> remain unset.
> >> The first use-case for this will be aliases for the TPS6586x's RTC
> >> device.
> >> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> >> ---
> >> drivers/mfd/mfd-core.c | 2 ++
> >> 1 file changed, 2 insertions(+)
> > I've tentatively applied this patch, but if it starts to cause more
> > problems than it solves we'll have to endeavour to find a different
> > solution.
> Thanks. I don't see this in linux-next yet though, so it's not getting
> much testing. Did you forget to push your branch?
Pushed now, sorry for the delay.
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