linux-kernel - Re: [PATCH v2] staging: vc04_services: replace msleep() by usleep

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Date:   Sun, 17 Oct 2021 14:33:57 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Stefan Wahren <stefan.wahren@...e.com>
cc:     Kushal-kothari <kushalkothari285@...il.com>,
        linux-arm-kernel@...ts.infradead.org, mike.rapoport@...il.com,
        kushalkothari2850@...il.com, outreachy-kernel@...glegroups.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev, nsaenz@...nel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v2] staging: vc04_services: replace msleep() by
 usleep_range()



On Sun, 17 Oct 2021, Stefan Wahren wrote:

> Hi,
>
> Am 17.10.21 um 11:29 schrieb Kushal-kothari:
> > Fixed the warning:-msleep < 20ms can sleep for up to 20ms by replacing
> > msleep(unsigned long msecs) by usleep_range(unsigned long min, unsigned long max)
> > in usecs as msleep(1ms~20ms) can sleep for upto 20 ms.
> >
> > Signed-off-by: Kushal-kothari <kushalkothari285@...il.com>
> > ---
> >
> > Changes from v1: Reword both the subject and the log message.
> >
> >  drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > index 6fbafdfe340f..80a7898c5331 100644
> > --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > @@ -857,7 +857,7 @@ vchiq_bulk_transmit(unsigned int handle, const void *data, unsigned int size,
> >  		if (status != VCHIQ_RETRY)
> >  			break;
> >
> > -		msleep(1);
> > +		usleep_range(1000, 2000);
>
> there was a recent discussion about this checkpatch warning [1]

Should there be a comment about it?

julia

>
> Best regards
>
> [1]
> https://lore.kernel.org/linux-staging/260b38b8-6f3f-f6cc-0388-09a269ead507@i2se.com/
>
>