From: Dan Murphy <dmurphy@ti.com>
To: "Guido Günther" <agx@sigxcpu.org>,
"Jacek Anaszewski" <jacek.anaszewski@gmail.com>,
"Pavel Machek" <pavel@ucw.cz>,
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: Wed, 18 Sep 2019 13:33:00 -0500 [thread overview]
Message-ID: <4a6b8df3-92f3-0f93-9327-36154daa06d8@ti.com> (raw)
In-Reply-To: <bc1a6e64da58d65b61c7e9358c745b0d467fc24c.1568772964.git.agx@sigxcpu.org>
Guido
On 9/17/19 9:19 PM, 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);
The change is ok and makes sense but I believe that if the regulator was
not properly disabled there needs to be some error message t0o.
If the code got here then there is either a fault or an I/O issue not a
regulator issue.
The regulator failing to disable should be logged.
Dan
>
> return ret;
> }
> +
> static int lm3692x_probe_dt(struct lm3692x_led *led)
> {
> struct fwnode_handle *child = NULL;
next prev parent reply other threads:[~2019-09-18 18:30 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 [this message]
2019-09-19 10:57 ` Pavel Machek
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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