From: Vijayavardhan Vennapusa vvreddy@codeaurora.org
commit bf95c4d4630c7a2c16e7b424fdea5177d9ce0864 upstream.
If any function like UVC is deactivating gadget as part of composition switch which results in not calling pullup enablement, it is not getting enabled after switch to new composition due to this deactivation flag not cleared. This results in USB enumeration not happening after switch to new USB composition. Hence clear deactivation flag inside gadget structure in configfs_composite_unbind() before switch to new USB composition.
Signed-off-by: Vijayavardhan Vennapusa vvreddy@codeaurora.org Signed-off-by: Dan Vacura w36195@motorola.com Cc: stable stable@kernel.org Link: https://lore.kernel.org/r/20220413211038.72797-1-w36195@motorola.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/gadget/configfs.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -1447,6 +1447,8 @@ static void configfs_composite_unbind(st usb_ep_autoconfig_reset(cdev->gadget); spin_lock_irqsave(&gi->spinlock, flags); cdev->gadget = NULL; + cdev->deactivations = 0; + gadget->deactivated = false; set_gadget_data(gadget, NULL); spin_unlock_irqrestore(&gi->spinlock, flags); }