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We recently discovered that __raw_read_system_reg() erroneously mapped sysreg IDs to the wrong registers. To ensure that we don't get hit by a similar issue in future, this patch makes __raw_read_system_reg() use a macro for each case statement, ensuring that each case reads the correct register. To ensure that this patch hasn't introduced an issue, I've binary-diffed the object files before and after this patch. No code or data sections differ (though some debug section differ due to line numbering changing). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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.