Messages in this thread | | | Date | Thu, 13 Apr 2006 15:57:57 +0100 | From | Russell King <> | Subject | Re: [ALSA STABLE 3/3] a few more -- unregister platform device again if probe was unsuccessful |
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On Thu, Apr 13, 2006 at 04:05:33PM +0200, Rene Herman wrote: > Not honouring/passing up probe() method error returns, not even -ENODEV, > makes some sense for discoverable busses such as PCI where you at least > have a driver independent bus_id sitting in /sys/devices/pci* that you > can later echo into /sys/bus/pci/drivers/*/bind to make the driver bind > to a device, but not much sense for the platform bus. Platform devices > only "exist" (in /sys/devices/platform) due to the driver creating them > itself and keeping them after failing a probe means that directory > becomes an enumeration of the drivers we loaded, rather than a view of > what's present in the system.
Incorrect. In some circumstances, they may be created by architecture support code, and might be created and destroyed dynamically by architecture support code.
> The driver model crowd did not seem exceedingly interested in the > problem though: > > http://marc.theaimsgroup.com/?l=linux-kernel&m=114417829014332&w=2
Incorrect summary. The ALSA use model of the driver model doesn't fit with the driver model use model. It's not that we're not interested in it - it's that it's perverted to the way driver model folk intend the subsystem to work, and the way that platform devices are used on some architectures.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - 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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