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SubjectRe: [PATCH] Input: i8042 add of_node_put()
On Fri, Nov 30, 2018 at 2:37 AM Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
>
> Hi Yangtao,
>
> On Wed, Nov 21, 2018 at 09:35:13AM -0500, Yangtao Li wrote:
> > use of_node_put() to release the refcount.
> >
> > Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
> > ---
> > drivers/input/serio/i8042-sparcio.h | 24 +++++++++++++++++-------
> > 1 file changed, 17 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/input/serio/i8042-sparcio.h b/drivers/input/serio/i8042-sparcio.h
> > index 796289846204..5495bc035518 100644
> > --- a/drivers/input/serio/i8042-sparcio.h
> > +++ b/drivers/input/serio/i8042-sparcio.h
> > @@ -108,18 +108,21 @@ static struct platform_driver sparc_i8042_driver = {
> >
> > static int __init i8042_platform_init(void)
> > {
> > + int rc;
> > struct device_node *root = of_find_node_by_path("/");
> >
> > if (!strcmp(root->name, "SUNW,JavaStation-1")) {
> > /* Hardcoded values for MrCoffee. */
> > i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
> > kbd_iobase = ioremap(0x71300060, 8);
> > - if (!kbd_iobase)
> > - return -ENODEV;
> > + if (!kbd_iobase){
> > + rc = -ENODEV;
> > + goto out;
> > + }
> > } else {
> > - int err = platform_driver_register(&sparc_i8042_driver);
> > - if (err)
> > - return err;
> > + rc = platform_driver_register(&sparc_i8042_driver);
> > + if (rc)
> > + goto out;
> >
> > if (i8042_kbd_irq == -1 ||
> > i8042_aux_irq == -1) {
> > @@ -127,13 +130,18 @@ static int __init i8042_platform_init(void)
> > of_iounmap(kbd_res, kbd_iobase, 8);
> > kbd_iobase = (void __iomem *) NULL;
> > }
> > - return -ENODEV;
> > + rc = -ENODEV;
> > + goto out;
> > }
> > }
> >
> > i8042_reset = I8042_RESET_ALWAYS;
> >
> > - return 0;
> > + rc = 0;
> > +out:
> > + of_node_put(root);
> > +
> > + return rc;
>
> Instead of rearranging code like this, can we instead have:
>
> static inline bool i8042_is_mr_coffee(void)
> {
> struct device_node *root;
> bool is_mr_coffree;
>
> root = of_find_node_by_path("/");
> is_mr_coffree = !strcmp(root->name, "SUNW,JavaStation-1");
> of_node_put(root);
>
> return is_mr_coffee;
> }
>
> ?
Yes, we should do this. The modified patch has been sent.
Also, I am very sorry to reply so late.

MBR,
Yangtao
>
> Thanks.
>
> --
> Dmitry

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