Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap_resource'

From: Lars-Peter Clausen
Date: Mon Jul 14 2014 - 04:48:36 EST

On 07/14/2014 10:31 AM, Richard Weinberger wrote:
Am 13.07.2014 22:17, schrieb Greg Kroah-Hartman:
On Sun, Jul 13, 2014 at 09:33:38PM +0200, Richard Weinberger wrote:
Maybe we could add COMPILE_TEST to the version string too?
Just to detect such kernels fast in user bug reports...

What kind of bug report are you going to get?

User manages to enable CONFIG_FOO by selecting COMPILE_TEST and
complains that it does not work. :)

These drivers are typically drivers for some SoC peripheral and the device will simply physically not exist on a platform that does not provide HAS_IOMEM. This is not really any different from making the driver selectable via COMPILE_TEST for any other platform. To hit the issue you'd have to instantiate a device driver instance for a device that physically does not exist. This will always result in a failure.

- Lars

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