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4d4f1e79b8
To start ISOC transfers in handlers dwc2_gadget_handle_nak() and dwc2_gadget_handle_out_token_ep_disabled() driver reads current frame number, based on which, set target frame number to start first ISOC transfer. In case if system's high IRQ latency and multiple EP's asserted interrupt in same frame, there are high probability that when reading current frame number in EP's handlers, actual frame number can be increased. As result for bInterval > 1, starting target frame will be set wrongly and all ISOC packets will be dropped. In patch "usb: dwc2: Change reading of current frame number flow" reading of current frame number done ASAP in common interrupt handler. This frame number stored in frame_number variable which used as starting frame number for ISOC EP's in above mentioned handlers. Signed-off-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> |
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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.
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.