linux-kernel - Re: [PATCH] greybus: audio_manager: fix a missing check of ida_simple

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Date:   Tue, 30 Apr 2019 08:19:28 -0700
From:   Mark Greer <mgreer@...malcreek.com>
To:     Vaibhav Agarwal <vaibhav.sr@...il.com>
Cc:     Kangjie Lu <kjlu@....edu>, pakki001@....edu,
        Mark Greer <mgreer@...malcreek.com>,
        Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        greybus-dev@...ts.linaro.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] greybus: audio_manager: fix a missing check of
 ida_simple_get

On Fri, Mar 15, 2019 at 10:49:46AM +0530, Vaibhav Agarwal wrote:
> On Thu, Mar 14, 2019 at 12:15 PM Kangjie Lu <kjlu@....edu> wrote:
> >
> > ida_simple_get could fail. The fix inserts a check for its
> > return value.
> >
> > Signed-off-by: Kangjie Lu <kjlu@....edu>
> > ---
> >  drivers/staging/greybus/audio_manager.c | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/staging/greybus/audio_manager.c b/drivers/staging/greybus/audio_manager.c
> > index d44b070d8862..c2a4af4c1d06 100644
> > --- a/drivers/staging/greybus/audio_manager.c
> > +++ b/drivers/staging/greybus/audio_manager.c
> > @@ -45,6 +45,9 @@ int gb_audio_manager_add(struct gb_audio_manager_module_descriptor *desc)
> >         int err;
> >
> >         id = ida_simple_get(&module_id, 0, 0, GFP_KERNEL);
> > +       if (id < 0)
> > +               return id;
> > +
> >         err = gb_audio_manager_module_create(&module, manager_kset,
> >                                              id, desc);
> >         if (err) {
> 
> Reviewed-by: Vaibhav Agarwal <vaibhav.sr@...il.com>

I am sorry for not responding until now.  For some strange reason, email
from this list are being delayed.  I just got this today (April 30).

Thanks for the patch, Kangjie, and thanks for the review, Vaibhav.

And FWIW,

Reviewed-by: Mark Greer <mgreer@...malcreek.com>

Mark
--