Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH v2 3/7] ACPI / processor: Introduce invalid_logical_cpuid() | Date | Tue, 05 May 2015 14:04:08 +0200 |
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On Tuesday, May 05, 2015 12:15:13 PM Sudeep Holla wrote: > > On 05/05/15 03:46, Hanjun Guo wrote: > > In ACPI processor drivers, we use direct comparisons of cpu logical > > id with -1 which are error prone in case logical cpuid is accidentally > > assinged an error code and prevents us from returning an error-encoding > > cpuid directly in some cases. > > > > So introduce invalid_logical_cpuid() to identify cpu with invalid > > logical cpu num, then it will be used to replace the direct comparisons > > with -1. > > > > Ah, OK I see that this fixes the issue I raised in PATCH 1/7, so I think > you need to reorder this and 1/7 patch IMO.
Well, comparing an unsigned int with -1 is not technically invalid (although it involves an implicit type conversion), but yes, Hanjun, please reorder the patches.
-- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.
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