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| Started by | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| First post | 2015-10-22 02:40 +0200 |
| Last post | 2015-10-22 02:40 +0200 |
| Articles | 1 — 1 participant |
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Re: [PATCH v6 22/22] of/platform: Defer probes of registered devices Michael Ellerman <mpe@ellerman.id.au> - 2015-10-22 02:40 +0200
| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Date | 2015-10-22 02:40 +0200 |
| Subject | Re: [PATCH v6 22/22] of/platform: Defer probes of registered devices |
| Message-ID | <qmc5c-2zR-21@gated-at.bofh.it> |
On Wed, 2015-10-21 at 00:54 -0500, Scott Wood wrote: > On Mon, 2015-09-21 at 16:03 +0200, Tomeu Vizoso wrote: > > Instead of trying to match and probe platform and AMBA devices right > > after each is registered, delay their probes until device_initcall_sync. > > > > This means that devices will start probing once all built-in drivers > > have registered, and after all platform and AMBA devices from the DT > > have been registered already. > > > > This allows us to prevent deferred probes by probing dependencies on > > demand. > > > > Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> > > --- > > > > Changes in v4: > > - Also defer probes of AMBA devices registered from the DT as they can > > also request resources. > > > > drivers/of/platform.c | 11 ++++++++--- > > 1 file changed, 8 insertions(+), 3 deletions(-) > > This breaks arch/powerpc/sysdev/fsl_pci.c. The PCI bus is an OF platform > device, and it must be probed before pcibios_init() which is a > subsys_initcall(), or else the PCI bus never gets scanned. Ah right. This is presumably why I'm not seeing any PCI devices on my p5020ds with linux-next. cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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