On Friday 10 October 2014 11:32:35 atull wrote:
> On Thu, 9 Oct 2014, Steffen Trumtrar wrote:
> > Do you have an example where this is really needed?
>
> My last version of the fpga manager framework
> (https://lkml.org/lkml/2014/8/1/518)
> added fpga_mgr_firmware_write(). This can be called from a device driver's
> probe function to request a fpga image be loaded. I want to support FPGA
> based functionality being seen pretty similar to really hard hardware. So
> the FPGA could have a PCI bus or something else that would want to be
> early.
Please be more specific. I agree we need a good reason for not just
using deferred probing, and PCI host bridges in general are no longer
something that needs to be probed early.
If you have a particular use case in mind that can't be solved in a
better way, we can talk about making this an earlier initcall (probably
not arch_initcall), but in general we try hard to avoid new ones
like this.
Arnd
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