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 <suneelgli...@gmail.com>
---
Changes v4:
- do not set preamble if child is block device for mass storage
Changes v3:
- remove 'check on parent uclass' in description
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 | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/cmd/usb.c b/cmd/usb.c
index d95bcf5..d64561e 100644
--- a/cmd/usb.c
+++ b/cmd/usb.c
@@ -349,6 +349,16 @@ static void usb_show_tree_graph(struct usb_device *dev,
char *pre)
printf(" %s", pre);
#ifdef CONFIG_DM_USB
has_child = device_has_active_children(dev->dev);
+ if (device_get_uclass_id(dev->dev) == UCLASS_MASS_STORAGE) {
+ struct udevice *child;
+
+ for (device_find_first_child(dev->dev, &child);
+ child;
+ device_find_next_child(&child)) {
+ if (device_get_uclass_id(child) == UCLASS_BLK)
+ has_child = 0;
+ }
+ }
#else
/* check if the device has connected children */
int i;
@@ -414,8 +424,12 @@ 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, we only want
+ * real devices
+ */
+ 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 +619,8 @@ 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);
}
--
2.7.4
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