Commit 494439de authored by John Keeping's avatar John Keeping Committed by Wen Zhiwei
Browse files

usb: gadget: core: force synchronous registration 

stable inclusion
from stable-v6.6.57
commit 0b97fe09f09922b48d021fdf8f46fa8fc3fd6b68
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IB2M97

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0b97fe09f09922b48d021fdf8f46fa8fc3fd6b68



--------------------------------

commit df9158826b00e53f42c67d62c887a84490d80a0a upstream.

Registering a gadget driver is expected to complete synchronously and
immediately after calling driver_register() this function checks that
the driver has bound so as to return an error.

Set PROBE_FORCE_SYNCHRONOUS to ensure this is the case even when
asynchronous probing is set as the default.

Fixes: fc274c1e ("USB: gadget: Add a new bus for gadgets")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarJohn Keeping <jkeeping@inmusicbrands.com>
Link: https://lore.kernel.org/r/20240913102325.2826261-1-jkeeping@inmusicbrands.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarWen Zhiwei <wenzhiwei@kylinos.cn>
parent 761f0f75

drivers/usb/gadget/udc/core.c

+1 −0
Original line number Diff line number Diff line
@@ -1671,6 +1671,7 @@ int usb_gadget_register_driver_owner(struct usb_gadget_driver *driver, 
	driver->driver.bus = &gadget_bus_type;

	driver->driver.owner = owner;

	driver->driver.mod_name = mod_name;

	driver->driver.probe_type = PROBE_FORCE_SYNCHRONOUS;

	ret = driver_register(&driver->driver);

	if (ret) {

		pr_warn("%s: driver registration failed: %d\n",