linux-kernel - Re: [PATCH v3 06/10] rtc: max77686: Add max77802 support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 26 Jan 2016 23:24:20 -0300
From:	Javier Martinez Canillas <javier@...hile0.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Javier Martinez Canillas <javier@....samsung.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Kukjin Kim <kgene@...nel.org>, rtc-linux@...glegroups.com,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Laxman Dewangan <ldewangan@...dia.com>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH v3 06/10] rtc: max77686: Add max77802 support

Hello Krzysztof,

On Tue, Jan 26, 2016 at 10:59 PM, Krzysztof Kozlowski
<k.kozlowski@...sung.com> wrote:
> On 27.01.2016 04:20, Javier Martinez Canillas wrote:

[snip]

>>       data[RTC_MONTH] = tm->tm_mon + 1;
>> -     data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
>>
>> -     if (tm->tm_year < 100) {
>> -             pr_warn("RTC cannot handle the year %d.  Assume it's 2000.\n",
>> -                     1900 + tm->tm_year);
>> -             return -EINVAL;
>> +     if (!info->drv_data->alarm_enable_reg) {
>
> I don't like all these inverted checks. They are error-prone. This is
> why I propose different name. However since you want to stick to this
> name of this property, then easier to read would be:
>
> if (info->drv_data->alarm_enable_reg) {
>         data[RTC_YEAR] = tm->tm_year;
> } else {
>         max77686-stuff...
> }
> Can you reverse it here and in other places?
>

Fair enough, I'll reverse the logic so is more natural and also do an
early return as Andi suggested.

> The patch beside that is okay and works fine:
>
> Tested on Trats2 (max77686):
> Tested-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>
> BR,
> Krzysztof
>

Best regards,
Javier