On 2021/5/12 14:39, Pierre Moreau wrote:
> Why remove the const modifier on `nb`?
A non-pointer local variable, I don't think it's necessary to
add const modifier to make the syntax too complicated.
>
> On 2021-05-11 — 16:28, Zhen Lei wrote:
>> When the 'nb' value allocated from 'bl_ida' is greater than or equal to
>> 100, it will not be released. In fact, we can simplify operations by
>> limiting the range of idas that can be applied for.
>>
>> By the way, delete the const modifier of the local variable 'nb'.
>>
>> Fixes: db1a0ae21461 ("drm/nouveau/bl: Assign different names to interfaces")
>> Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
>> ---
>> drivers/gpu/drm/nouveau/nouveau_backlight.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
>> index 72f35a2babcb20e..d1c998e645fb4b6 100644
>> --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
>> +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
>> @@ -51,8 +51,9 @@ static bool
>> nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE],
>> struct nouveau_backlight *bl)
>> {
>> - const int nb = ida_simple_get(&bl_ida, 0, 0, GFP_KERNEL);
>> - if (nb < 0 || nb >= 100)
>> + int nb = ida_simple_get(&bl_ida, 0, 100, GFP_KERNEL);
>> +
>> + if (nb < 0)
>> return false;
>> if (nb > 0)
>> snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight%d", nb);
>> --
>> 2.26.0.106.g9fadedd
>>
>>
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>
> .
>
