diff mbox

[3/3] block/stream.c: ensure copy always set

Message ID 1379952450-29640-4-git-send-email-alex.bennee@linaro.org
State New
Headers show

Commit Message

Alex Bennée Sept. 23, 2013, 4:07 p.m. UTC
From: Alex Bennée <alex@bennee.com>

This only showed up when compiling with
--enable-trace-backend=stderr|ftrace at which point the compiler
complains with the following:

block/stream.c: In function ‘stream_run’:
block/stream.c:141:22: error: ‘copy’ may be used uninitialized in this function [-Werror=uninitialized]

Not sure exactly why it needs these options but it does seem clear the
negative return case should be handled.
---
 block/stream.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Stefan Hajnoczi Sept. 24, 2013, 12:06 p.m. UTC | #1
On Mon, Sep 23, 2013 at 05:07:30PM +0100, alex.bennee@linaro.org wrote:
> From: Alex Bennée <alex@bennee.com>
> 
> This only showed up when compiling with
> --enable-trace-backend=stderr|ftrace at which point the compiler
> complains with the following:
> 
> block/stream.c: In function ‘stream_run’:
> block/stream.c:141:22: error: ‘copy’ may be used uninitialized in this function [-Werror=uninitialized]
> 
> Not sure exactly why it needs these options but it does seem clear the
> negative return case should be handled.
> ---
>  block/stream.c | 2 ++
>  1 file changed, 2 insertions(+)

Stefan Weil already posted a similar patch:
http://patchwork.ozlabs.org/patch/276936/
Alex Bennée Sept. 24, 2013, 2:27 p.m. UTC | #2
stefanha@redhat.com writes:

> On Mon, Sep 23, 2013 at 05:07:30PM +0100, alex.bennee@linaro.org wrote:
>> From: Alex Bennée <alex@bennee.com>
>> 
>> This only showed up when compiling with
>> --enable-trace-backend=stderr|ftrace at which point the compiler
>> complains with the following:
<nsip>
>
> Stefan Weil already posted a similar patch:
> http://patchwork.ozlabs.org/patch/276936/

OK I'll drop the patch in v3 which I guess is getting ready to be a
proper PULL request ;-)

What's the typical lag for trivial patches getting in? I see there are
periodic trivial pull requests. I assume there are maintainers that
collect these up into trees?
Stefan Hajnoczi Sept. 25, 2013, 8:41 a.m. UTC | #3
On Tue, Sep 24, 2013 at 03:27:49PM +0100, Alex Bennée wrote:
> 
> stefanha@redhat.com writes:
> 
> > On Mon, Sep 23, 2013 at 05:07:30PM +0100, alex.bennee@linaro.org wrote:
> >> From: Alex Bennée <alex@bennee.com>
> >> 
> >> This only showed up when compiling with
> >> --enable-trace-backend=stderr|ftrace at which point the compiler
> >> complains with the following:
> <nsip>
> >
> > Stefan Weil already posted a similar patch:
> > http://patchwork.ozlabs.org/patch/276936/
> 
> OK I'll drop the patch in v3 which I guess is getting ready to be a
> proper PULL request ;-)

You don't need to send a pull request yourself.  Once your patch is
reviewed it should be merged by a maintainer.

> What's the typical lag for trivial patches getting in? I see there are
> periodic trivial pull requests. I assume there are maintainers that
> collect these up into trees?

Contributors send patches to qemu-devel.  After the patches are reviewed
they are merged either directly into qemu.git or into a subsystem tree
by a maintainer.

Subsystem maintainers send pull requests to flush their patch queue when
they feel it is appropriate.  For example, Kevin and I send a weekly
block layer pull request that usually contains 5-15 patches.

Expect 1.5 weeks to get the average patch reviewed and merged into
qemu.git.  If you're lucky they can be merged in a day.  If you're
unlucky you may have to ping the list to move the process along.

Stefan
diff mbox

Patch

diff --git a/block/stream.c b/block/stream.c
index 078ce4a..3b9c198 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -136,6 +136,8 @@  wait:
             }
 
             copy = (ret == 1);
+        } else {
+            copy = false;
         }
         trace_stream_one_iteration(s, sector_num, n, ret);
         if (ret >= 0 && copy) {