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[ Upstream commit e5b5da96da50ef30abb39cb9f694e99366404d24 ] Gadget driver should always use config_ep_by_speed() to initialize usb_ep struct according to usb device's operating speed. Otherwise, usb_ep struct may be wrong if usb devcie's operating speed is changed. The key point in this patch is that we want to make sure the desc pointer in usb_ep struct will be set to NULL when gadget is disconnected. This will force it to call config_ep_by_speed() to correctly initialize usb_ep struct based on the new operating speed when gadget is re-connected later. Reviewed-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: EJ Hsu <ejh@nvidia.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.