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usb: gadget: configfs: Check USB configuration before adding

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Ensure that the USB gadget is able to support the configuration being
added based on the number of endpoints required from all interfaces.  This
is for accounting for any bandwidth or space limitations.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-3-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wesley Cheng 2021-07-10 02:13:11 -07:00 committed by Greg Kroah-Hartman
parent ce7d0008c2
commit 7adf9e3adc
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/configfs.c
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@ -1404,6 +1404,10 @@ static int configfs_composite_bind(struct usb_gadget *gadget,
goto err_purge_funcs;
}
}
ret = usb_gadget_check_config(cdev->gadget);
if (ret)
goto err_purge_funcs;
usb_ep_autoconfig_reset(cdev->gadget);
}
if (cdev->use_os_string) {