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Message-ID: <Zl3vMKEbsCFFwOAe@pirotess>
Date: Mon, 3 Jun 2024 18:28:32 +0200
From: Ismael Luceno <ismael@...ev.co.uk>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: linux-kernel@...r.kernel.org,
Bluecherry Maintainers <maintainers@...echerrydvr.com>,
Anton Sviridenko <anton@...p.bluecherry.net>,
Andrey Utkin <andrey_utkin@...tmail.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org
Subject: Re: [PATCH 6/8] media: solo6x10: use 'time_left' variable with
wait_for_completion_timeout()
On 03/Jun/2024 18:25, Ismael Luceno wrote:
> On 03/Jun/2024 11:28, Wolfram Sang wrote:
> > There is a confusing pattern in the kernel to use a variable named 'timeout' to
> > store the result of wait_for_completion_timeout() causing patterns like:
> >
> > timeout = wait_for_completion_timeout(...)
> > if (!timeout) return -ETIMEDOUT;
> >
> > with all kinds of permutations. Use 'time_left' as a variable to make the code
> > self explaining.
> >
> > Fix to the proper variable type 'unsigned long' while here.
> >
> > Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> > ---
> > drivers/media/pci/solo6x10/solo6x10-p2m.c | 8 ++++----
> > 1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/media/pci/solo6x10/solo6x10-p2m.c b/drivers/media/pci/solo6x10/solo6x10-p2m.c
> > index ca70a864a3ef..5f100e5e03d9 100644
> > --- a/drivers/media/pci/solo6x10/solo6x10-p2m.c
> > +++ b/drivers/media/pci/solo6x10/solo6x10-p2m.c
> > @@ -57,7 +57,7 @@ int solo_p2m_dma_desc(struct solo_dev *solo_dev,
> > int desc_cnt)
> > {
> > struct solo_p2m_dev *p2m_dev;
> > - unsigned int timeout;
> > + unsigned long time_left;
> > unsigned int config = 0;
> > int ret = 0;
> > unsigned int p2m_id = 0;
> > @@ -99,12 +99,12 @@ int solo_p2m_dma_desc(struct solo_dev *solo_dev,
> > desc[1].ctrl);
> > }
> >
> > - timeout = wait_for_completion_timeout(&p2m_dev->completion,
> > - solo_dev->p2m_jiffies);
> > + time_left = wait_for_completion_timeout(&p2m_dev->completion,
> > + solo_dev->p2m_jiffies);
> >
> > if (WARN_ON_ONCE(p2m_dev->error))
> > ret = -EIO;
> > - else if (timeout == 0) {
> > + else if (time_left == 0) {
> > solo_dev->p2m_timeouts++;
> > ret = -EAGAIN;
> > }
>
> Signed-off-by: Ismael Luceno <ismael@...ev.co.uk>
Sorry, I meant Acked-by.
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