diff options
| author |   Matthias Kaehlcke <mka@chromium.org> | 2022-06-30 12:35:30 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-08 14:53:50 +0200 |
| commit | 3a6bf4a08142826698121bef16b244dcf50a6431 (patch) | |
| tree | b6e5a07476c00225dd3173de39529f081f210d38 /drivers/usb/core | |
| parent | usb: misc: Add onboard_usb_hub driver (diff) | |
| download | linux-dev-3a6bf4a08142826698121bef16b244dcf50a6431.tar.xz linux-dev-3a6bf4a08142826698121bef16b244dcf50a6431.zip | |
usb: core: hub: Create platform devices for onboard hubs in hub_probe()
Call onboard_hub_create/destroy_pdevs() from hub_probe/disconnect()
to create/destroy platform devices for onboard USB hubs that may be
connected to the hub. The onboard hubs must have nodes in the
device tree.
onboard_hub_create/destroy_pdevs() are NOPs unless
CONFIG_USB_ONBOARD_HUB=y/m.
Also add a field to struct usb_hub to keep track of the onboard hub
platform devices that are owned by the hub.
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20220630123445.v24.4.Ic9dd36078f9d803de82ca01a6700c58b8e4de27e@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hub.c | 9 | ||||
| -rw-r--r-- | drivers/usb/core/hub.h | 1 |
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index b7f66dcd1fe0..2633acde7ac1 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -23,6 +23,7 @@ #include <linux/usb.h> #include <linux/usbdevice_fs.h> #include <linux/usb/hcd.h> +#include <linux/usb/onboard_hub.h> #include <linux/usb/otg.h> #include <linux/usb/quirks.h> #include <linux/workqueue.h> @@ -1752,6 +1753,8 @@ static void hub_disconnect(struct usb_interface *intf) if (hub->quirk_disable_autosuspend) usb_autopm_put_interface(intf); + onboard_hub_destroy_pdevs(&hub->onboard_hub_devs); + kref_put(&hub->kref, hub_release); } @@ -1869,6 +1872,7 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) INIT_DELAYED_WORK(&hub->leds, led_work); INIT_DELAYED_WORK(&hub->init_work, NULL); INIT_WORK(&hub->events, hub_event); + INIT_LIST_HEAD(&hub->onboard_hub_devs); spin_lock_init(&hub->irq_urb_lock); timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0); usb_get_intf(intf); @@ -1889,8 +1893,11 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) usb_autopm_get_interface_no_resume(intf); } - if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) + if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) { + onboard_hub_create_pdevs(hdev, &hub->onboard_hub_devs); + return 0; + } hub_disconnect(intf); return -ENODEV; diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 3fcb38099ce3..b2925856b4cb 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -73,6 +73,7 @@ struct usb_hub { spinlock_t irq_urb_lock; struct timer_list irq_urb_retry; struct usb_port **ports; + struct list_head onboard_hub_devs; }; /** |