724c2d7436
When we open or close the modem network device we need to ensure the hardware is powered. Replace the callers of ipa_clock_get() found in ipa_open() and ipa_stop() with calls to pm_runtime_get_sync(). If an error is returned, simply return that error to the caller (without any error or warning message). This could conceivably occur if the function was called while the system was suspended, but that really shouldn't happen. Replace corresponding calls to ipa_clock_put() with pm_runtime_put() also. If the modem crashes we also need to ensure the hardware is powered to recover. If getting power returns an error there's not much we can do, but at least report the error. (Ideally the remoteproc SSR code would ensure the AP was not suspended when it sends the notification, but that is not (yet) the case.) Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| 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 | ||
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.