From: Dan Williams <dan.j.williams@intel.com>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: Vaibhav Jain <vaibhav@linux.ibm.com>,
linux-nvdimm <linux-nvdimm@lists.01.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] libnvdimm/bus: return the outvar 'cmd_rc' error code in __nd_ioctl()
Date: Tue, 18 Feb 2020 13:03:26 -0800 [thread overview]
Message-ID: <CAPcyv4gn1M87AnuzOEorihG1nmCiHDKL0Z4HfLbNbkeOcO3GPw@mail.gmail.com> (raw)
In-Reply-To: <x49r1yrboh2.fsf@segfault.boston.devel.redhat.com>
On Tue, Feb 18, 2020 at 1:00 PM Jeff Moyer <jmoyer@redhat.com> wrote:
>
> Vaibhav Jain <vaibhav@linux.ibm.com> writes:
>
> > Presently the error code returned via out variable 'cmd_rc' from the
> > nvdimm-bus controller function is ignored when called from
> > __nd_ioctl() and never communicated back to user-space code that called
> > an ioctl on dimm/bus.
> >
> > This minor patch updates __nd_ioctl() to propagate the value of out
> > variable 'cmd_rc' back to user-space in case it reports an error.
> >
> > Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
> > ---
> > drivers/nvdimm/bus.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> > index a8b515968569..5b687a27fdf2 100644
> > --- a/drivers/nvdimm/bus.c
> > +++ b/drivers/nvdimm/bus.c
> > @@ -1153,6 +1153,11 @@ static int __nd_ioctl(struct nvdimm_bus *nvdimm_bus, struct nvdimm *nvdimm,
> > if (rc < 0)
> > goto out_unlock;
> >
> > + if (cmd_rc < 0) {
> > + rc = cmd_rc;
> > + goto out_unlock;
> > + }
> > +
> > if (!nvdimm && cmd == ND_CMD_CLEAR_ERROR && cmd_rc >= 0) {
> > struct nd_cmd_clear_error *clear_err = buf;
>
> Looks good to me.
>
> Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Applied.
_______________________________________________
Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org
To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
next prev parent reply other threads:[~2020-02-18 21:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-22 15:53 [PATCH] libnvdimm/bus: return the outvar 'cmd_rc' error code in __nd_ioctl() Vaibhav Jain
2020-02-18 21:00 ` Jeff Moyer
2020-02-18 21:03 ` Dan Williams [this message]
2020-02-29 2:37 ` Dan Williams
2020-03-02 4:21 ` Vaibhav Jain
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAPcyv4gn1M87AnuzOEorihG1nmCiHDKL0Z4HfLbNbkeOcO3GPw@mail.gmail.com \
--to=dan.j.williams@intel.com \
--cc=aneesh.kumar@linux.ibm.com \
--cc=jmoyer@redhat.com \
--cc=linux-nvdimm@lists.01.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=vaibhav@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).