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SubjectRe: [PATCH 1/3] auxdisplay: charlcd: fix hex literal ranges for graphics command
On Sat, Feb 10, 2018 at 11:41 AM, Miguel Ojeda
<miguel.ojeda.sandonis@gmail.com> wrote:
> On Sat, Feb 10, 2018 at 10:20 AM, Willy Tarreau <w@1wt.eu> wrote:
>> On Sat, Feb 10, 2018 at 09:58:44AM +0100, Miguel Ojeda wrote:
>>> On Sat, Feb 10, 2018 at 12:50 AM, Robert Abel <rabel@robertabel.eu> wrote:

>>> > shift ^= 4;
>>> > if (*esc >= '0' && *esc <= '9') {
>>> > value |= (*esc - '0') << shift;
>>> > - } else if (*esc >= 'A' && *esc <= 'Z') {
>>> > + } else if (*esc >= 'A' && *esc <= 'F') {
>>> > value |= (*esc - 'A' + 10) << shift;
>>> > - } else if (*esc >= 'a' && *esc <= 'z') {
>>> > + } else if (*esc >= 'a' && *esc <= 'f') {
>>>
>>> Willy, Geert: this seems obvious, but do you know if the broader range
>>> was intended for some reason?
>>
>> No, I think it was simply a brain fart from me 14 years ago, as I can
>> find it as well in the original 0.9.0 patch for kernel 2.4!

I understand that we have a huge and hopefully nice library in the
kernel, but the question still the same, what prevents a developer or
maintainer to look at it from time to time?

For, I dare to say, ages we have hex_to_bin() and hex2bin().
Can we use it?

--
With Best Regards,
Andy Shevchenko

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