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Re: [XEN PATCH] x86/cpufreq: address MISRA Rule 7.3 violation
- To: Jan Beulich <jbeulich@xxxxxxxx>, Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 10 Sep 2024 11:55:56 +0100
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- Cc: sstabellini@xxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 10 Sep 2024 10:56:07 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10/09/2024 10:12 am, Jan Beulich wrote:
> On 10.09.2024 10:48, Nicola Vetrini wrote:
>> Rule 7.3 states:
>> "The lowercase character l shall not be used in a literal suffix",
>> but the INTEL_MSR_RANGE macro uses the "ull" suffix.
>> The "u" is transformed in uppercase for consistency.
>>
>> No functional change.
>>
>> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> I'm heavily tempted though to ...
>
>> --- a/xen/arch/x86/acpi/cpufreq/acpi.c
>> +++ b/xen/arch/x86/acpi/cpufreq/acpi.c
>> @@ -25,7 +25,7 @@ enum {
>> SYSTEM_IO_CAPABLE,
>> };
>>
>> -#define INTEL_MSR_RANGE (0xffffull)
>> +#define INTEL_MSR_RANGE (0xffffULL)
> ... drop the pointless parentheses while committing.
I'd be tempted to delete the constant entirely.
It's utterly wrong and unsafe everywhere it's used...
~Andrew
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