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

[Ying Fang]

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>"

> 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
>
> .