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"proto_tab" is a RCU protected array, when directly accessing the array, sparse throws these warnings: CHECK /srv/work/frogger/socketcan/linux/net/can/af_can.c net/can/af_can.c:115:14: error: incompatible types in comparison expression (different address spaces) net/can/af_can.c:795:17: error: incompatible types in comparison expression (different address spaces) net/can/af_can.c:816:9: error: incompatible types in comparison expression (different address spaces) This patch fixes the problem by using rcu_access_pointer() and annotating "proto_tab" array as __rcu. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.