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commit9aaa81c336upstream. Chipidea core was calling the interrupt handler from non-IRQ context with interrupts enabled, something which can lead to a deadlock if there's an actual interrupt trying to take a lock that's already held (e.g. the controller lock in udc_irq()). Add a wrapper that can be used to fake interrupts instead of calling the handler directly. Fixes:3ecb3e09b0("usb: chipidea: Use extcon framework for VBUS and ID detect") Fixes:876d4e1e82("usb: chipidea: core: add wakeup support for extcon") Cc: Peter Chen <peter.chen@kernel.org> Cc: stable@vger.kernel.org # 4.4 Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20211021083447.20078-1-johan@kernel.org 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.