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0d423c4a78
1. Following the ARM SMC32 calling convention, the return value from secure monitor is a 32-bit signed integer. This patch changes the type of the return value of the function meson_sm_call(). 2. Now, when meson_sm_call() returns a 32-bit signed integer, we need to ensure that this value is not negative. It is important to check that the return value is not negative in both the meson_sm_call_read() and meson_sm_call_write() functions. 3. Add a comment explaining why it is necessary to check if the SMC return value is equal to 0 in the function meson_sm_call_read(). It is not obvious when reading this code. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230830140850.17130-1-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| 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.