From: Pavel Machek <pavel@ucw.cz>
To: "Guido Günther" <agx@sigxcpu.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Dan Murphy <dmurphy@ti.com>,
linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] leds: lm3692x: Don't overwrite return value in error path
Date: Thu, 19 Sep 2019 12:57:07 +0200 [thread overview]
Message-ID: <20190919105707.GB29939@amd> (raw)
In-Reply-To: <bc1a6e64da58d65b61c7e9358c745b0d467fc24c.1568772964.git.agx@sigxcpu.org>
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On Tue 2019-09-17 19:19:55, Guido Günther wrote:
> The driver currently reports successful initialization on every failure
> as long as it's able to power off the regulator. Don't check the return
> value of regulator_disable to avoid that.
>
> Signed-off-by: Guido Günther <agx@sigxcpu.org>
> ---
> drivers/leds/leds-lm3692x.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
> index 487228c2bed2..f394669ad8f2 100644
> --- a/drivers/leds/leds-lm3692x.c
> +++ b/drivers/leds/leds-lm3692x.c
> @@ -312,15 +312,12 @@ static int lm3692x_init(struct lm3692x_led *led)
> if (led->enable_gpio)
> gpiod_direction_output(led->enable_gpio, 0);
>
> - if (led->regulator) {
> - ret = regulator_disable(led->regulator);
> - if (ret)
> - dev_err(&led->client->dev,
> - "Failed to disable regulator\n");
> - }
> + if (led->regulator)
> + regulator_disable(led->regulator);
>
> return ret;
Overwriting return value is bad, but we should still print some kind
of error message.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2019-09-19 10:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-18 2:19 [PATCH 0/5] leds: lm3692x: Probing and flag fixes Guido Günther
2019-09-18 2:19 ` [PATCH 1/5] leds: lm3692x: Print error value on dev_err Guido Günther
2019-09-18 18:23 ` Dan Murphy
2019-09-18 2:19 ` [PATCH 2/5] leds: lm3692x: Don't overwrite return value in error path Guido Günther
2019-09-18 18:33 ` Dan Murphy
2019-09-19 10:57 ` Pavel Machek [this message]
2019-09-18 2:19 ` [PATCH 3/5] leds: lm3692x: Handle failure to probe the regulator Guido Günther
2019-09-18 18:41 ` Dan Murphy
2019-09-18 2:19 ` [PATCH 4/5] leds: lm3692x: Use flags from LM3692X_BOOST_CTRL Guido Günther
2019-09-18 18:46 ` Dan Murphy
2019-09-18 2:19 ` [PATCH 5/5] leds: lm3692x: Use flags from LM3692X_BRT_CTRL Guido Günther
2019-09-18 18:48 ` Dan Murphy
2019-09-19 9:54 ` [PATCH 0/5] leds: lm3692x: Probing and flag fixes Pavel Machek
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