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The original dwc_otg driver used a DWC_WORKQ_SCHEDULE() wrapper to queue work items. Because that wrapper acquired the driver's global spinlock, an unlock/lock dance was necessary whenever a work item was queued up while the global spinlock was already held. The dwc2 driver dropped DWC_WORKQ_SCHEDULE() in favor of a direct call to queue_work(), but retained the (now gratuitous) unlock/lock dance in dwc2_handle_conn_id_status_change_intr(). Drop it. Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Minas Harutyunyan <hminas@synopsys.com> Acked-by: Felipe Balbi <balbi@kernel.org> Link: https://lore.kernel.org/r/77c07f00a6a9d94323c4a060a3c72817b0703b97.1574244795.git.lukas@wunner.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.