[U-Boot] [PATCH v2] cmd: usb: add blk devices to ignore list in tree graph

[Bin Meng <bmeng.cn@gmail.com>]

Hi Suneel,

On Tue, Sep 19, 2017 at 11:05 AM, Suneel Garapati
<suneelglinux@gmail.com> wrote:
> add blk child devices to ignore list while displaying
> usb tree graph, otherwise usb tree and info commands
> may cause crash treating blk as usb device.
>
> Signed-off-by: Suneel Garapati <suneelglinux@gmail.com>
> ---
>
> Changes v2:
>  - remove check on parent uclass
> Changes v1:
>  - add separate check on blk uclass
>  - modify description
>  - add separate check on parent uclass as usb
>
>  cmd/usb.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/cmd/usb.c b/cmd/usb.c
> index d95bcf5..eb31353 100644
> --- a/cmd/usb.c
> +++ b/cmd/usb.c
> @@ -414,8 +414,12 @@ static void usb_show_tree_graph(struct usb_device *dev, char *pre)
>
>                 udev = dev_get_parent_priv(child);
>
> -               /* Ignore emulators, we only want real devices */
> -               if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
> +               /*
> +                * Ignore emulators and block child devices, with check on
> +                * parent uclass as usb, we only want real devices

nits: please remove the comment of "with check on parent uclass as usb".

> +                */
> +               if ((device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
> +                   (device_get_uclass_id(child) != UCLASS_BLK)) {
>                         usb_show_tree_graph(udev, pre);
>                         pre[index] = 0;
>                 }
> @@ -605,7 +609,8 @@ static void usb_show_info(struct usb_device *udev)
>         for (device_find_first_child(udev->dev, &child);
>              child;
>              device_find_next_child(&child)) {
> -               if (device_active(child)) {
> +               if (device_active(child) &&
> +                   (device_get_uclass_id(child) != UCLASS_BLK)) {
>                         udev = dev_get_parent_priv(child);
>                         usb_show_info(udev);
>                 }
> --

Regards,
Bin