[RESEND PATCH v5 3/5] drivers core: allow probe_err accept integer and pointer types

[Mark Brown]

On Wed, Jun 24, 2020 at 03:25:33PM +0100, Robin Murphy wrote:

> And yeah, anyone who pipes up suggesting that places where an ERR_PTR value
> could be passed to probe_err() could simply refactor IS_ERR() checks with
> more uses of the god-awful PTR_ERR_OR_ZERO() obfuscator gets a long stare of
> disapproval...

We could also have a probe_err_ptr() or something that took an ERR_PTR()
instead if there really were an issue with explicitly doing this.
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