forked from Minki/linux
mainlining shenanigans
627a545c6b
For many years omap variants have been setting the runtime PM autosuspend delay to -1 to prevent unsafe policy with lossy first character on wake-up. The user must specifically enable the timeout for UARTs if desired. We must not enable the workaround for serdev devices though. It leads into UARTs not idling if no serdev devices are loaded and there is no sysfs entry to configure the UART in that case. And this means that my PM may not work unless the serdev modules are loaded. We can detect a serdev device being configured based on a dts child node, and we can simply skip the workround in that case. And the serdev driver can idle the port during runtime when suitable if an out-of-band wake-up GPIO line exists for example. Let's also add some comments to the workaround while at it. Cc: Johan Hovold <johan@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20190723115400.46432-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.