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usb: onboard-hub: Bail out if peer hub is already probed

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The .bind function is implemented to bind the correct
"half" of the hub that the driver wants to bind,
and returning -ENODEV for the other "half".

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Venkatesh Yadav Abbarapu 2024-11-25 09:42:02 +05:30 • committed by Marek Vasut
parent 09f557e106
commit 57e30b09fc
1 changed files with 21 additions and 0 deletions
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21
common/usb_onboard_hub.c
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@ -176,6 +176,26 @@ err:
return ret; return ret;
} }
static int usb_onboard_hub_bind(struct udevice *dev)
{
struct ofnode_phandle_args phandle;
const void *fdt = gd->fdt_blob;
int ret, off;
ret = dev_read_phandle_with_args(dev, "peer-hub", NULL, 0, 0, &phandle);
if (ret) {
dev_err(dev, "peer-hub not specified\n");
return ret;
}
off = ofnode_to_offset(phandle.node);
ret = fdt_node_check_compatible(fdt, off, "usb424,5744");
if (!ret)
return 0;
return -ENODEV;
}
static int usb_onboard_hub_remove(struct udevice *dev) static int usb_onboard_hub_remove(struct udevice *dev)
{ {
struct onboard_hub *hub = dev_get_priv(dev); struct onboard_hub *hub = dev_get_priv(dev);
@ -218,6 +238,7 @@ static const struct udevice_id usb_onboard_hub_ids[] = {
U_BOOT_DRIVER(usb_onboard_hub) = { U_BOOT_DRIVER(usb_onboard_hub) = {
.name = "usb_onboard_hub", .name = "usb_onboard_hub",
.id = UCLASS_USB_HUB, .id = UCLASS_USB_HUB,
.bind = usb_onboard_hub_bind,
.probe = usb_onboard_hub_probe, .probe = usb_onboard_hub_probe,
.remove = usb_onboard_hub_remove, .remove = usb_onboard_hub_remove,
.of_match = usb_onboard_hub_ids, .of_match = usb_onboard_hub_ids,