Re: [PATCH v2] Input: iqs626a - Use scope-based resource management in iqs626_parse_events()

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On Mon, Mar 04, 2024 at 11:55:23AM +0100, Julia Lawall wrote:
> 
> 
> On Mon, 4 Mar 2024, Markus Elfring wrote:
> 
> > From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> > Date: Mon, 4 Mar 2024 11:40:04 +0100
> >
> > Scope-based resource management became supported also for this software
> > area by contributions of Jonathan Cameron on 2024-02-17.
> >
> > device property: Add cleanup.h based fwnode_handle_put() scope based cleanup.
> > https://lore.kernel.org/r/20240217164249.921878-3-jic23@xxxxxxxxxx
> >
> >
> > * Thus use the attribute “__free(fwnode_handle)”.
> >
> > * Reduce the scope for the local variable “ev_node” into a for loop.
> >
> > Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> > ---
> >
> > v2:
> > An other cleanup technique was applied as requested by Dmitry Torokhov
> > and Jeff LaBundy.
> >
> >
> >  drivers/input/misc/iqs626a.c | 8 ++------
> >  1 file changed, 2 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/input/misc/iqs626a.c b/drivers/input/misc/iqs626a.c
> > index 0dab54d3a060..86fcb5134f45 100644
> > --- a/drivers/input/misc/iqs626a.c
> > +++ b/drivers/input/misc/iqs626a.c
> > @@ -462,7 +462,6 @@ iqs626_parse_events(struct iqs626_private *iqs626,
> >  {
> >  	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
> >  	struct i2c_client *client = iqs626->client;
> > -	struct fwnode_handle *ev_node;
> >  	const char *ev_name;
> >  	u8 *thresh, *hyst;
> >  	unsigned int val;
> > @@ -501,6 +500,8 @@ iqs626_parse_events(struct iqs626_private *iqs626,
> >  		if (!iqs626_channels[ch_id].events[i])
> >  			continue;
> >
> > +		struct fwnode_handle *ev_node __free(fwnode_handle);
> 
> Doesn't this need to be initialized?

It would be better if we had a helper here, iqs626_get_ev_node() or
something.

Thanks.

-- 
Dmitry




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