Re: [RFC PATCH 1/5] device_tree: Add qemu_fdt_add_path

[Andrew Jones]

On Thu, Feb 25, 2021 at 08:54:40PM +0800, Ying Fang wrote:
> 
> 
> On 2/25/2021 7:03 PM, Andrew Jones wrote:
> > Hi Ying Fang,
> > 
> > I don't see any change in this patch from what I have in my
> > tree, so this should be
> > 
> >   From: Andrew Jones <drjones@redhat.com>
> > 
> > Thanks,
> > drew
> > 
> 
> Yes, I picked it from your qemu branch:
> https://github.com/rhdrjones/qemu/commit/ecfc1565f22187d2c715a99bbcd35cf3a7e428fa
> 
> So what can I do to make it "From: Andrew Jones <drjones@redhat.com>" ?
> 
> Can I made it by using git commit --amend like below ?
> 
> git commit --amend --author "Andrew Jones <drjones@redhat.com>"

That's one way to fix it now, but normally when you apply/cherry-pick
a patch it will keep the authorship. Then, all you have to do is
post like usual and the "From: ..." will show up automatically.

Thanks,
drew

> 
> > On Thu, Feb 25, 2021 at 04:56:23PM +0800, Ying Fang wrote:
> > > qemu_fdt_add_path() works like qemu_fdt_add_subnode(), except
> > > it also adds any missing parent nodes. We also tweak an error
> > > message of qemu_fdt_add_subnode().
> > > 
> > > Signed-off-by: Andrew Jones <drjones@redhat.com>
> > > Signed-off-by: Ying Fang <fangying1@huawei.com>
> > > ---
> > >   include/sysemu/device_tree.h |  1 +
> > >   softmmu/device_tree.c        | 45 ++++++++++++++++++++++++++++++++++--
> > >   2 files changed, 44 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h
> > > index 982c89345f..15fb98af98 100644
> > > --- a/include/sysemu/device_tree.h
> > > +++ b/include/sysemu/device_tree.h
> > > @@ -104,6 +104,7 @@ uint32_t qemu_fdt_get_phandle(void *fdt, const char 
> > > *path);
> > >   uint32_t qemu_fdt_alloc_phandle(void *fdt);
> > >   int qemu_fdt_nop_node(void *fdt, const char *node_path);
> > >   int qemu_fdt_add_subnode(void *fdt, const char *name);
> > > +int qemu_fdt_add_path(void *fdt, const char *path);
> > >   #define qemu_fdt_setprop_cells(fdt, node_path, property, ...)           
> > >       \
> > >       do {                                                                
> > >       \
> > > diff --git a/softmmu/device_tree.c b/softmmu/device_tree.c
> > > index b9a3ddc518..1e3857ca0c 100644
> > > --- a/softmmu/device_tree.c
> > > +++ b/softmmu/device_tree.c
> > > @@ -515,8 +515,8 @@ int qemu_fdt_add_subnode(void *fdt, const char *name)
> > >       retval = fdt_add_subnode(fdt, parent, basename);
> > >       if (retval < 0) {
> > > -        error_report("FDT: Failed to create subnode %s: %s", name,
> > > -                     fdt_strerror(retval));
> > > +        error_report("%s: Failed to create subnode %s: %s",
> > > +                     __func__, name, fdt_strerror(retval));
> > >           exit(1);
> > >       }
> > > @@ -524,6 +524,47 @@ int qemu_fdt_add_subnode(void *fdt, const char *name)
> > >       return retval;
> > >   }
> > > +/*
> > > + * Like qemu_fdt_add_subnode(), but will add all missing
> > > + * subnodes in the path.
> > > + */
> > > +int qemu_fdt_add_path(void *fdt, const char *path)
> > > +{
> > > +    char *dupname, *basename, *p;
> > > +    int parent, retval = -1;
> > > +
> > > +    if (path[0] != '/') {
> > > +        return retval;
> > > +    }
> > > +
> > > +    parent = fdt_path_offset(fdt, "/");
> > > +    p = dupname = g_strdup(path);
> > > +
> > > +    while (p) {
> > > +        *p = '/';
> > > +        basename = p + 1;
> > > +        p = strchr(p + 1, '/');
> > > +        if (p) {
> > > +            *p = '\0';
> > > +        }
> > > +        retval = fdt_path_offset(fdt, dupname);
> > > +        if (retval < 0 && retval != -FDT_ERR_NOTFOUND) {
> > > +            error_report("%s: Invalid path %s: %s",
> > > +                         __func__, path, fdt_strerror(retval));
> > > +            exit(1);
> > > +        } else if (retval == -FDT_ERR_NOTFOUND) {
> > > +            retval = fdt_add_subnode(fdt, parent, basename);
> > > +            if (retval < 0) {
> > > +                break;
> > > +            }
> > > +        }
> > > +        parent = retval;
> > > +    }
> > > +
> > > +    g_free(dupname);
> > > +    return retval;
> > > +}
> > > +
> > >   void qemu_fdt_dumpdtb(void *fdt, int size)
> > >   {
> > >       const char *dumpdtb = current_machine->dumpdtb;
> > > -- 
> > > 2.23.0
> > > 
> > > 
> > 
> > .
> > 
>