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197eb5c416
dw8250_handle_irq() reads LSR under a few conditions, convert both to use serial_lsr_in() in order to preserve LSR flags properly across reads. Fixes:424d79183a("serial: 8250_dw: Avoid "too much work" from bogus rx timeout interrupt") Fixes:aa63d786ce("serial: 8250: dw: Add support for DMA flow controlling devices") Cc: Douglas Anderson <dianders@chromium.org> Cc: Phil Edworthy <phil.edworthy@renesas.com> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20220608095431.18376-6-ilpo.jarvinen@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 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.