From: Mathieu Malaterre <malat@debian.org>
To: Christophe LEROY <christophe.leroy@c-s.fr>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Paul Mackerras <paulus@samba.org>, Jiri Slaby <jslaby@suse.com>,
"open list:LINUX FOR POWERPC PA SEMI PWRFICIENT"
<linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 01/21] powerpc: Remove warning on array size when empty
Date: Tue, 27 Feb 2018 08:44:01 +0100 [thread overview]
Message-ID: <CA+7wUsys=J8vkEOtzd26B6MGEhfTBRzaA_myuUWNzf24rMvn+A@mail.gmail.com> (raw)
In-Reply-To: <603d5335-6220-73f2-d902-b92bc74bc79e@c-s.fr>
On Tue, Feb 27, 2018 at 8:33 AM, Christophe LEROY
<christophe.leroy@c-s.fr> wrote:
>
>
> Le 27/02/2018 à 08:25, Mathieu Malaterre a écrit :
>>
>> On Mon, Feb 26, 2018 at 3:45 PM, Andy Shevchenko
>> <andy.shevchenko@gmail.com> wrote:
>>>
>>> On Mon, Feb 26, 2018 at 4:44 PM, Andy Shevchenko
>>> <andy.shevchenko@gmail.com> wrote:
>>>>
>>>> On Sun, Feb 25, 2018 at 7:22 PM, Mathieu Malaterre <malat@debian.org>
>>>> wrote:
>>>
>>>
>>>>> static void __init check_cpu_feature_properties(unsigned long node)
>>>>> {
>>>>> - unsigned long i;
>>>>> struct feature_property *fp = feature_properties;
>>>>> const __be32 *prop;
>>>>>
>>>>
>>>> Much simpler is just add
>>>>
>>>> if (ARRAY_SIZE() == 0)
>>>> return;
>>>>
>>>>> - for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) {
>>>>> + for (; fp != feature_properties +
>>>>> ARRAY_SIZE(feature_properties); ++fp) {
>>>
>>>
>>> ...or convert to while(), which will be more readable.
>>
>>
>> So you'd prefer something like:
>>
>> while (fp < feature_properties + ARRAY_SIZE(feature_properties)) {
>> ...
>> ++fp;
>> }
>>
>> right ?
>>
>
>
> Why not do as suggested by Segher, ie just replace < by != in the original
> form ?
I can do that.
> Or add in front:
> if (!ARRAY_SIZE(feature_properties))
> return;
(not tested) I believe the compiler still go over the for() loop and
will complain about the original unsigned comparison.
> Christophe
next prev parent reply other threads:[~2018-02-27 7:44 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-25 17:22 [PATCH 00/21] powerpc/gamecube: make W=1 compilation errors free Mathieu Malaterre
2018-02-25 17:22 ` [PATCH 01/21] powerpc: Remove warning on array size when empty Mathieu Malaterre
2018-02-25 18:53 ` Segher Boessenkool
2018-02-26 14:44 ` Andy Shevchenko
2018-02-26 14:45 ` Andy Shevchenko
2018-02-27 7:25 ` Mathieu Malaterre
2018-02-27 7:33 ` Christophe LEROY
2018-02-27 7:44 ` Mathieu Malaterre [this message]
2018-02-27 15:52 ` Andy Shevchenko
2018-02-27 17:25 ` Mathieu Malaterre
2018-02-27 20:42 ` Segher Boessenkool
2018-02-28 15:50 ` Andy Shevchenko
2018-03-01 2:55 ` Michael Ellerman
2018-03-01 7:01 ` Mathieu Malaterre
2018-03-01 9:33 ` Michael Ellerman
2018-03-02 19:49 ` [PATCH v2 " Mathieu Malaterre
2018-03-14 9:28 ` [v2,01/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 02/21] powerpc: Move the inline keyword at the beginning of function declaration Mathieu Malaterre
2018-03-14 9:27 ` [02/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 03/21] powerpc: Mark the variable earlycon_acpi_spcr_enable maybe_unused Mathieu Malaterre
2018-03-04 10:54 ` Michael Ellerman
2018-03-10 18:08 ` Mathieu Malaterre
2018-02-25 17:22 ` [PATCH 04/21] powerpc: Mark both tmp variables as unused Mathieu Malaterre
2018-03-14 9:27 ` [04/21] " Michael Ellerman
2018-03-14 10:38 ` [PATCH 04/21] " Christophe LEROY
2018-03-16 14:08 ` Michael Ellerman
2018-02-25 17:22 ` [PATCH 05/21] powerpc: Avoid comparison of unsigned long >= 0 in pfn_valid Mathieu Malaterre
2018-02-26 6:32 ` Christophe LEROY
2018-02-26 7:49 ` Mathieu Malaterre
2018-02-26 8:46 ` Segher Boessenkool
2018-03-02 19:54 ` Mathieu Malaterre
2018-03-03 7:45 ` christophe leroy
2018-03-04 10:55 ` Michael Ellerman
2018-03-04 19:46 ` christophe leroy
2018-03-07 20:34 ` [PATCH v2 " Mathieu Malaterre
2018-03-14 9:28 ` [v2, " Michael Ellerman
2018-02-25 17:22 ` [PATCH 06/21] powerpc: Avoid comparison of unsigned long >= 0 in __access_ok Mathieu Malaterre
2018-02-26 6:34 ` Christophe LEROY
2018-02-26 6:50 ` Christophe LEROY
2018-02-26 7:44 ` Mathieu Malaterre
2018-02-26 17:50 ` Mathieu Malaterre
2018-02-26 20:00 ` christophe leroy
2018-02-26 22:17 ` Segher Boessenkool
2018-03-02 19:50 ` [PATCH v2 " Mathieu Malaterre
2018-03-03 7:44 ` christophe leroy
2018-03-14 9:28 ` [v2, " Michael Ellerman
2018-02-25 17:22 ` [PATCH 07/21] powerpc: Make functions flipper_pic_init & ug_udbg_putc static Mathieu Malaterre
2018-03-14 9:27 ` [07/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 08/21] powerpc: Make function __giveup_fpu static Mathieu Malaterre
2018-03-14 9:28 ` [08/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 09/21] powerpc: Make function save_all static Mathieu Malaterre
2018-02-25 17:22 ` [PATCH 10/21] powerpc: Add missing prototype for slb_miss_bad_addr Mathieu Malaterre
2018-03-14 9:27 ` [10/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 11/21] powerpc: Add missing prototype for hdec_interrupt Mathieu Malaterre
2018-03-14 9:27 ` [11/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 12/21] powerpc: Add missing prototype for time_init Mathieu Malaterre
2018-03-14 9:27 ` [12/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 13/21] powerpc: Add missing prototype for arch_dup_task_struct Mathieu Malaterre
2018-03-14 9:27 ` [13/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 14/21] powerpc: Add missing prototype for arch_irq_work_raise Mathieu Malaterre
2018-03-14 9:27 ` [14/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 15/21] powerpc: Add missing prototype for MMU_setup Mathieu Malaterre
2018-03-04 10:54 ` Michael Ellerman
2018-03-07 20:32 ` [PATCH v2 15/21] powerpc: Make function MMU_setup static Mathieu Malaterre
2018-03-14 9:28 ` [v2,15/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 16/21] powerpc: Add missing prototype for init_IRQ Mathieu Malaterre
2018-03-14 9:28 ` [16/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 17/21] powerpc: Add missing prototype for sys_debug_setcontext Mathieu Malaterre
2018-03-04 10:54 ` Michael Ellerman
2018-03-07 20:37 ` Mathieu Malaterre
2018-03-08 10:36 ` Michael Ellerman
2018-03-26 18:56 ` Mathieu Malaterre
2018-03-27 8:50 ` Michael Ellerman
2018-03-14 9:28 ` [17/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 18/21] powerpc: Add missing prototypes for sys_sigreturn & sys_rt_sigreturn Mathieu Malaterre
2018-03-14 9:28 ` [18/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 19/21] powerpc: Add missing prototypes for hw_breakpoint_handler & arch_unregister_hw_breakpoint Mathieu Malaterre
2018-03-14 9:28 ` [19/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 20/21] powerpc: Add missing prototypes for ppc_select & ppc_fadvise64_64 Mathieu Malaterre
2018-03-14 9:28 ` [20/21] " Michael Ellerman
2018-02-25 17:22 ` [PATCH 21/21] powerpc: Add missing prototypes in setup_32.c Mathieu Malaterre
2018-03-08 11:44 ` Michael Ellerman
2018-03-14 9:28 ` [21/21] " Michael Ellerman
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