Messages in this thread | | | Date | Fri, 16 Apr 2021 20:33:55 +0300 | From | Andy Shevchenko <> | Subject | Re: [PATCH v1 1/1] ACPI: NFIT: Import GUID before use |
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On Fri, Apr 16, 2021 at 09:15:34AM -0700, Dan Williams wrote: > On Fri, Apr 16, 2021 at 1:58 AM Andy Shevchenko > <andy.shevchenko@gmail.com> wrote: > > On Fri, Apr 16, 2021 at 8:28 AM Dan Williams <dan.j.williams@intel.com> wrote: > > > On Thu, Apr 15, 2021 at 6:59 AM Andy Shevchenko > > > <andriy.shevchenko@linux.intel.com> wrote: > > > > > > > > Strictly speaking the comparison between guid_t and raw buffer > > > > is not correct. Import GUID to variable of guid_t type and then > > > > compare. > > > > > > Hmm, what about something like the following instead, because it adds > > > safety. Any concerns about evaluating x twice in a macro should be > > > alleviated by the fact that ARRAY_SIZE() will fail the build if (x) is > > > not an array. > > > > ARRAY_SIZE doesn't check type. > > See __must_be_array. > > > I don't like hiding ugly casts like this. > > See PTR_ERR, ERR_PTR, ERR_CAST.
It's special, i.e. error pointer case. We don't handle such here.
> There's nothing broken about the way the code currently stands, so I'd > rather try to find something to move the implementation forward than > sideways.
Submit a patch then. I rest my case b/c I consider that ugly castings worse than additional API call, although it's not ideal.
-- With Best Regards, Andy Shevchenko
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