132dcf65fc
If a buggy HW reports some unpredicted event (for example, an overrun event following a MSE event while the EP ring is actually not empty), the driver will never find the TD, and it will loop until the TD list is empty. Before commits [1][2], the spin lock was released when giving back a URB in the do-while loop. This could cause more TD to be added to TD list, causing an infinite loop. Because of commits [1][2] the spin lock is not released any more, thus the infinite loop prevention is unnecessary and is removed. [1], commit0c03d89d0c("xhci: Giveback urb in finish_td directly") [2], commit36dc01657b("usb: host: xhci: Support running urb giveback in tasklet context") Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20240626124835.1023046-18-mathias.nyman@linux.intel.com 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 reStructuredText 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.