RE: [PATCH] platform/x86: hp-bioscfg: Remove useless else
From: Lopez, Jorge A (Security)
Date: Fri Aug 11 2023 - 11:42:53 EST
The redundant code is a remnant code from test phase.
I concur with your changes which were approved in a separate email.
Regards,
Jorge Lopez
HP Inc
"Once you stop learning, you start dying"
Albert Einstein
> -----Original Message-----
> From: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
> Sent: Friday, August 11, 2023 3:04 AM
> To: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
> Cc: Lopez, Jorge A (Security) <jorge.lopez2@xxxxxx>;
> hdegoede@xxxxxxxxxx; markgross@xxxxxxxxxx; platform-driver-
> x86@xxxxxxxxxxxxxxx; LKML <linux-kernel@xxxxxxxxxxxxxxx>; Abaci Robot
> <abaci@xxxxxxxxxxxxxxxxx>
> Subject: Re: [PATCH] platform/x86: hp-bioscfg: Remove useless else
>
> CAUTION: External Email
>
> On Fri, 11 Aug 2023, Jiapeng Chong wrote:
>
> > The assignment of the else and if branches is the same, so the else
> > here is redundant, so we remove it.
> >
> > ./drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c:545:3-5:
> WARNING: possible condition with no effect (if == else).
> >
> > Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
> > Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
> > ---
> > .../platform/x86/hp/hp-bioscfg/passwdobj-attributes.c | 10
> > ++--------
> > 1 file changed, 2 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> > b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> > index 03d0188804ba..771e554182dc 100644
> > --- a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> > +++ b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
> > @@ -541,14 +541,8 @@ void hp_exit_password_attributes(void)
> > struct kobject *attr_name_kobj =
> >
> > bioscfg_drv.password_data[instance_id].attr_name_kobj;
> >
> > - if (attr_name_kobj) {
> > - if (!strcmp(attr_name_kobj->name, SETUP_PASSWD))
> > - sysfs_remove_group(attr_name_kobj,
> > - &password_attr_group);
> > - else
> > - sysfs_remove_group(attr_name_kobj,
> > - &password_attr_group);
> > - }
> > + if (attr_name_kobj)
> > + sysfs_remove_group(attr_name_kobj,
> > + &password_attr_group);
> > }
> > bioscfg_drv.password_instances_count = 0;
> > kfree(bioscfg_drv.password_data);
>
> While this is a valid observation, I wonder why you didn't change the create
> side too?
>
> I hope it's not because you never took a look to understand the
> SETUP_PASSWD related code, it'd be pretty impossible to not notice it.
> This could have just as well have been a bug with inconsitent pairing against
> create side, which is why reports from automated tools must not be
> implemented blindly but the related code must be understood first.
>
> --
> i.