From: Dan Carpenter <dan.carpenter@oracle.com>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: "Tomer Samara" <tomersamara98@gmail.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org, "Todd Kjos" <tkjos@android.com>,
"Suren Baghdasaryan" <surenb@google.com>,
"Riley Andrews" <riandrews@android.com>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
"Hridya Valsaraju" <hridya@google.com>,
"Arve Hjønnevåg" <arve@android.com>,
"Joel Fernandes" <joel@joelfernandes.org>,
"Laura Abbott" <labbott@redhat.com>,
"Martijn Coenen" <maco@android.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian Brauner" <christian@brauner.io>
Subject: Re: [PATCH v4 2/2] staging: android: Remove BUG from ion_system_heap.c
Date: Mon, 24 Aug 2020 14:24:57 +0300 [thread overview]
Message-ID: <20200824112457.GI1793@kadam> (raw)
In-Reply-To: <3eba90dc-128f-49da-41a6-81494653d535@infradead.org>
On Fri, Aug 21, 2020 at 09:25:26AM -0700, Randy Dunlap wrote:
> On 8/21/20 8:28 AM, Tomer Samara wrote:
> > Remove BUG() from ion_sytem_heap.c
> >
> > this fix the following checkpatch issue:
> > Avoid crashing the kernel - try using WARN_ON &
> > recovery code ratherthan BUG() or BUG_ON().
> >
> > Signed-off-by: Tomer Samara <tomersamara98@gmail.com>
> > ---
> > drivers/staging/android/ion/ion_system_heap.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c
> > index eac0632ab4e8..00d6154aec34 100644
> > --- a/drivers/staging/android/ion/ion_system_heap.c
> > +++ b/drivers/staging/android/ion/ion_system_heap.c
> > @@ -30,7 +30,7 @@ static int order_to_index(unsigned int order)
> > for (i = 0; i < NUM_ORDERS; i++)
> > if (order == orders[i])
> > return i;
> > - BUG();
> > + /* This is impossible. */
> > return -1;
> > }
>
> Hi,
> Please explain why this is impossible.
>
> If some caller calls order_to_index(5), it will return -1, yes?
>
I was happy enough with the comment as-is given that I suggested it.
But an alternative comment could be "/* This is impossible.
We always pass valid values to this function. */
regards,
dan carpenter
next prev parent reply other threads:[~2020-08-24 11:27 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 15:27 [PATCH v4 0/2] staging: android: Remove BUG/BUG_ON from ion Tomer Samara
2020-08-21 15:27 ` [PATCH v4 1/2] staging: android: Remove BUG_ON from ion_page_pool.c Tomer Samara
2020-08-24 11:22 ` Dan Carpenter
2020-08-21 15:28 ` [PATCH v4 2/2] staging: android: Remove BUG from ion_system_heap.c Tomer Samara
2020-08-21 16:25 ` Randy Dunlap
2020-08-22 9:34 ` Tomer Samara
2020-08-22 14:22 ` Randy Dunlap
2020-08-24 11:24 ` Dan Carpenter [this message]
2020-08-24 11:27 ` Dan Carpenter
2020-08-24 11:43 ` Dan Carpenter
2020-08-25 6:47 ` [PATCH v4 0/2] staging: android: Remove BUG/BUG_ON from ion Christoph Hellwig
2020-08-25 6:52 ` Greg Kroah-Hartman
2020-08-27 7:16 ` Christoph Hellwig
2020-08-27 12:15 ` Greg Kroah-Hartman
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=20200824112457.GI1793@kadam \
--to=dan.carpenter@oracle.com \
--cc=arve@android.com \
--cc=christian@brauner.io \
--cc=devel@driverdev.osuosl.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=gregkh@linuxfoundation.org \
--cc=hridya@google.com \
--cc=joel@joelfernandes.org \
--cc=labbott@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=maco@android.com \
--cc=rdunlap@infradead.org \
--cc=riandrews@android.com \
--cc=sumit.semwal@linaro.org \
--cc=surenb@google.com \
--cc=tkjos@android.com \
--cc=tomersamara98@gmail.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).