Fix the error handling for the led-max-microamp property.
Need to check if the property is present and then if it is
retrieve the setting and its max boundary
Reported-by: Pavel Machek <[email protected]>
Signed-off-by: Dan Murphy <[email protected]>
---
drivers/leds/leds-lm3532.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
index c5cfd8e3f15f..13b4265fb85a 100644
--- a/drivers/leds/leds-lm3532.c
+++ b/drivers/leds/leds-lm3532.c
@@ -601,11 +601,15 @@ static int lm3532_parse_node(struct lm3532_data *priv)
goto child_out;
}
- ret = fwnode_property_read_u32(child, "led-max-microamp",
- &led->full_scale_current);
-
- if (led->full_scale_current > LM3532_FS_CURR_MAX)
- led->full_scale_current = LM3532_FS_CURR_MAX;
+ if (fwnode_property_present(child, "led-max-microamp")) {
+ if (fwnode_property_read_u32(child, "led-max-microamp",
+ &led->full_scale_current))
+ dev_err(&priv->client->dev,
+ "Failed getting led-max-microamp\n");
+
+ if (led->full_scale_current > LM3532_FS_CURR_MAX)
+ led->full_scale_current = LM3532_FS_CURR_MAX;
+ }
if (led->mode == LM3532_BL_MODE_ALS) {
led->mode = LM3532_ALS_CTRL;
--
2.22.0.214.g8dca754b1e
Hi Dan,
Thanks for the update.
On 8/29/19 9:18 PM, Dan Murphy wrote:
> Fix the error handling for the led-max-microamp property.
> Need to check if the property is present and then if it is
> retrieve the setting and its max boundary
>
> Reported-by: Pavel Machek <[email protected]>
> Signed-off-by: Dan Murphy <[email protected]>
> ---
> drivers/leds/leds-lm3532.c | 14 +++++++++-----
> 1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
> index c5cfd8e3f15f..13b4265fb85a 100644
> --- a/drivers/leds/leds-lm3532.c
> +++ b/drivers/leds/leds-lm3532.c
> @@ -601,11 +601,15 @@ static int lm3532_parse_node(struct lm3532_data *priv)
> goto child_out;
> }
>
> - ret = fwnode_property_read_u32(child, "led-max-microamp",
> - &led->full_scale_current);
> -
> - if (led->full_scale_current > LM3532_FS_CURR_MAX)
> - led->full_scale_current = LM3532_FS_CURR_MAX;
> + if (fwnode_property_present(child, "led-max-microamp")) {
> + if (fwnode_property_read_u32(child, "led-max-microamp",
> + &led->full_scale_current))
> + dev_err(&priv->client->dev,
> + "Failed getting led-max-microamp\n");
> +
> + if (led->full_scale_current > LM3532_FS_CURR_MAX)
> + led->full_scale_current = LM3532_FS_CURR_MAX;
One more nit: we have min() macro in kernel.h for such things.
> + }
>
> if (led->mode == LM3532_BL_MODE_ALS) {
> led->mode = LM3532_ALS_CTRL;
>
--
Best regards,
Jacek Anaszewski
On Thu 2019-08-29 14:18:36, Dan Murphy wrote:
> Fix the error handling for the led-max-microamp property.
> Need to check if the property is present and then if it is
> retrieve the setting and its max boundary
>
> Reported-by: Pavel Machek <[email protected]>
> Signed-off-by: Dan Murphy <[email protected]>
Acked-by: Pavel Machek <[email protected]>
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
On Thu 2019-08-29 22:04:18, Jacek Anaszewski wrote:
> Hi Dan,
>
> Thanks for the update.
>
> On 8/29/19 9:18 PM, Dan Murphy wrote:
> > Fix the error handling for the led-max-microamp property.
> > Need to check if the property is present and then if it is
> > retrieve the setting and its max boundary
> >
> > Reported-by: Pavel Machek <[email protected]>
> > Signed-off-by: Dan Murphy <[email protected]>
> > ---
> > drivers/leds/leds-lm3532.c | 14 +++++++++-----
> > 1 file changed, 9 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
> > index c5cfd8e3f15f..13b4265fb85a 100644
> > --- a/drivers/leds/leds-lm3532.c
> > +++ b/drivers/leds/leds-lm3532.c
> > @@ -601,11 +601,15 @@ static int lm3532_parse_node(struct lm3532_data *priv)
> > goto child_out;
> > }
> >
> > - ret = fwnode_property_read_u32(child, "led-max-microamp",
> > - &led->full_scale_current);
> > -
> > - if (led->full_scale_current > LM3532_FS_CURR_MAX)
> > - led->full_scale_current = LM3532_FS_CURR_MAX;
> > + if (fwnode_property_present(child, "led-max-microamp")) {
> > + if (fwnode_property_read_u32(child, "led-max-microamp",
> > + &led->full_scale_current))
> > + dev_err(&priv->client->dev,
> > + "Failed getting led-max-microamp\n");
> > +
> > + if (led->full_scale_current > LM3532_FS_CURR_MAX)
> > + led->full_scale_current = LM3532_FS_CURR_MAX;
>
> One more nit: we have min() macro in kernel.h for such things.
Actually, I believe this one is okay. min() would be also good, but
improvement is not that big, as it still duplicates the argument.
led->full_scale_current = min(led->full_scale_current, LM3532_FS_CURR_MAX)
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
On 8/29/19 11:22 PM, Pavel Machek wrote:
> On Thu 2019-08-29 22:04:18, Jacek Anaszewski wrote:
>> Hi Dan,
>>
>> Thanks for the update.
>>
>> On 8/29/19 9:18 PM, Dan Murphy wrote:
>>> Fix the error handling for the led-max-microamp property.
>>> Need to check if the property is present and then if it is
>>> retrieve the setting and its max boundary
>>>
>>> Reported-by: Pavel Machek <[email protected]>
>>> Signed-off-by: Dan Murphy <[email protected]>
>>> ---
>>> drivers/leds/leds-lm3532.c | 14 +++++++++-----
>>> 1 file changed, 9 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
>>> index c5cfd8e3f15f..13b4265fb85a 100644
>>> --- a/drivers/leds/leds-lm3532.c
>>> +++ b/drivers/leds/leds-lm3532.c
>>> @@ -601,11 +601,15 @@ static int lm3532_parse_node(struct lm3532_data *priv)
>>> goto child_out;
>>> }
>>>
>>> - ret = fwnode_property_read_u32(child, "led-max-microamp",
>>> - &led->full_scale_current);
>>> -
>>> - if (led->full_scale_current > LM3532_FS_CURR_MAX)
>>> - led->full_scale_current = LM3532_FS_CURR_MAX;
>>> + if (fwnode_property_present(child, "led-max-microamp")) {
>>> + if (fwnode_property_read_u32(child, "led-max-microamp",
>>> + &led->full_scale_current))
>>> + dev_err(&priv->client->dev,
>>> + "Failed getting led-max-microamp\n");
>>> +
>>> + if (led->full_scale_current > LM3532_FS_CURR_MAX)
>>> + led->full_scale_current = LM3532_FS_CURR_MAX;
>>
>> One more nit: we have min() macro in kernel.h for such things.
>
> Actually, I believe this one is okay. min() would be also good, but
> improvement is not that big, as it still duplicates the argument.
>
> led->full_scale_current = min(led->full_scale_current, LM3532_FS_CURR_MAX)
I don't see any excuse for not improving that if we are at patch stage.
It looks simply cleaner.
--
Best regards,
Jacek Anaszewski