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| author | Matthias Kaehlcke <mka@chromium.org> | 2022-02-17 10:42:54 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-26 14:01:12 +0200 |
| commit | c40b62216c1aecc0dc00faf33d71bd71cb440337 (patch) | |
| tree | cba8dfe54ff4c3163f4856a21c120c77addac1dc | |
| parent | 0298b4b95cb373c21e6323c905589f8dac42c5b4 (diff) | |
| download | lwn-c40b62216c1aecc0dc00faf33d71bd71cb440337.tar.gz lwn-c40b62216c1aecc0dc00faf33d71bd71cb440337.zip | |
usb: core: hcd: Create platform devices for onboard hubs in probe()
Call onboard_hub_create/destroy_pdevs() from usb_add/remove_hcd()
for primary HCDs to create/destroy platform devices for onboard
USB hubs that may be connected to the root hub of the controller.
These functions are a NOP unless CONFIG_USB_ONBOARD_HUB=y/m.
Also add a field to struct usb_hcd to keep track of the onboard hub
platform devices that are owned by the HCD.
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20220217104219.v21.3.I7a3a7d9d2126c34079b1cab87aa0b2ec3030f9b7@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/hcd.c | 6 | ||||
| -rw-r--r-- | include/linux/usb/hcd.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index d9712c2602af..81785072fafb 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -36,6 +36,7 @@ #include <linux/phy/phy.h> #include <linux/usb.h> #include <linux/usb/hcd.h> +#include <linux/usb/onboard_hub.h> #include <linux/usb/otg.h> #include "usb.h" @@ -2984,6 +2985,9 @@ int usb_add_hcd(struct usb_hcd *hcd, if (hcd->uses_new_polling && HCD_POLL_RH(hcd)) usb_hcd_poll_rh_status(hcd); + if (usb_hcd_is_primary_hcd(hcd)) + onboard_hub_create_pdevs(hcd->self.root_hub, &hcd->onboard_hub_devs); + return retval; err_register_root_hub: @@ -3062,6 +3066,8 @@ void usb_remove_hcd(struct usb_hcd *hcd) if (usb_hcd_is_primary_hcd(hcd)) { if (hcd->irq > 0) free_irq(hcd->irq, hcd); + + onboard_hub_destroy_pdevs(&hcd->onboard_hub_devs); } usb_deregister_bus(&hcd->self); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 548a028f2dab..4ebc91c09182 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -198,6 +198,7 @@ struct usb_hcd { struct usb_hcd *shared_hcd; struct usb_hcd *primary_hcd; + struct list_head onboard_hub_devs; #define HCD_BUFFER_POOLS 4 struct dma_pool *pool[HCD_BUFFER_POOLS]; |