linux-kernel - Re: [PATCH v2 2/3] staging: vchiq: revert "switch to wait_for_completion_killable"

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Message-ID: <d1de60bd-c4c6-ebb1-1eac-a5eba41c9a78@i2se.com>
Date:   Mon, 6 May 2019 18:28:48 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Dan Carpenter <dan.carpenter@...cle.com>
Cc:     devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        phil@...pberrypi.org, linux-kernel@...r.kernel.org,
        Eric Anholt <eric@...olt.net>,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] staging: vchiq: revert "switch to
 wait_for_completion_killable"

Hi Nicolas,

Am 06.05.19 um 17:59 schrieb Nicolas Saenz Julienne:
> Hi Dan, thanks for reviewing.
>
> On Mon, 2019-05-06 at 18:20 +0300, Dan Carpenter wrote:
>> On Mon, May 06, 2019 at 04:40:29PM +0200, Nicolas Saenz Julienne wrote:
>>> @@ -1740,7 +1740,8 @@ parse_rx_slots(struct vchiq_state *state)
>>>  					&service->bulk_rx : &service->bulk_tx;
>>>  
>>>  				DEBUG_TRACE(PARSE_LINE);
>>> -				if (mutex_lock_killable(&service->bulk_mutex)) {
>>> +				if (mutex_lock_killable(
>>> +					&service->bulk_mutex) != 0) {
>> This series does't add != 0 consistently...  Personally, I would prefer
>> we just leave it out.  I use != 0 for two things.  1)  When I'm talking
>> about the number zero.
>>
>> 	if (len == 0) {
>>
>> Or with strcmp():
>>
>> 	if (strcmp(a, b) == 0) { // a equals b
>> 	if (strcmp(a, b) < 0) {  // a less than b.
>>
>> But here zero means no errors, so I would just leave it out...
> I agree, I'll fix it.

i also agree with Dan, but this specific patch should revert the changes
of a772f116702e3f0afdd7e6acadc1b8fb3b20b9ff . So mentioned style issue
should be fixed in a separate patch.

Regards Stefan

>
> Regards,
> Nicolas
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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