From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Stefan Wahren <wahrenst@gmx.net>
Cc: linux-pwm@vger.kernel.org,
Florian Fainelli <f.fainelli@gmail.com>,
Scott Branden <sbranden@broadcom.com>,
Ray Jui <rjui@broadcom.com>, Eric Anholt <eric@anholt.net>,
Thierry Reding <thierry.reding@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] pwm: bcm2835: suppress error message during deferred probe
Date: Sat, 24 Aug 2019 11:30:32 +0200 [thread overview]
Message-ID: <20190824093032.cunkmukx73vl4hy3@pengutronix.de> (raw)
In-Reply-To: <1566630445-4599-4-git-send-email-wahrenst@gmx.net>
On Sat, Aug 24, 2019 at 09:07:25AM +0200, Stefan Wahren wrote:
> This suppresses error messages in case the PWM clock isn't ready yet.
>
> Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
> ---
> drivers/pwm/pwm-bcm2835.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c
> index 2c82386..ce362be 100644
> --- a/drivers/pwm/pwm-bcm2835.c
> +++ b/drivers/pwm/pwm-bcm2835.c
> @@ -153,7 +153,10 @@ static int bcm2835_pwm_probe(struct platform_device *pdev)
>
> pc->clk = devm_clk_get(&pdev->dev, NULL);
> if (IS_ERR(pc->clk)) {
> - dev_err(&pdev->dev, "clock not found: %ld\n", PTR_ERR(pc->clk));
> + if (PTR_ERR(pc->clk) != -EPROBE_DEFER) {
> + dev_err(&pdev->dev, "clock not found: %ld\n",
> + PTR_ERR(pc->clk));
> + }
> return PTR_ERR(pc->clk);
> }
I would have used:
if (IS_ERR(pc->clk)) {
int err = PTR_ERR(pc->clk);
if (err != -EPROBE_DEFER)
dev_err(&pdev->dev, "clock not found: %d\n", err);
return err;
}
This calculates the error code only once and make the dev_err line short
enough to not make it necessary to add a line break.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2019-08-24 9:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-24 7:07 [PATCH 0/3] pwm: bcm2835: Minor fixes Stefan Wahren
2019-08-24 7:07 ` [PATCH 1/3] pwm: bcm2835: suppress error message for invalid period_ns Stefan Wahren
2019-08-24 9:26 ` Uwe Kleine-König
2019-08-24 7:07 ` [PATCH 2/3] pwm: bcm2835: fix period_ns range check Stefan Wahren
2019-08-24 9:26 ` Uwe Kleine-König
2019-08-24 7:07 ` [PATCH 3/3] pwm: bcm2835: suppress error message during deferred probe Stefan Wahren
2019-08-24 9:30 ` Uwe Kleine-König [this message]
2019-08-24 9:44 ` Stefan Wahren
2019-08-24 9:25 ` [PATCH 0/3] pwm: bcm2835: Minor fixes Uwe Kleine-König
2019-08-24 10:05 ` Stefan Wahren
2019-08-24 10:56 ` Uwe Kleine-König
2019-08-24 14:17 ` Stefan Wahren
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