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include <linux/types.h> for __iomem definition. Also, add volatile to iounmap() like other architectures have it to avoid "discarding volatile" warnings from some drivers. Finally, explicitly promote the base address for INB/OUTB functions to avoid some old legacy drivers complaining about int-to-ptr promotions. The drivers are unlikely to work but they're included in allmodconfig so the warnings are noisy. Fixes, among other warnings, these with allmodconfig: ../arch/riscv/include/asm/io.h:24:21: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token extern void __iomem *ioremap(phys_addr_t offset, unsigned long size); sound/pci/echoaudio/echoaudio.c: In function 'snd_echo_free': sound/pci/echoaudio/echoaudio.c:1879:10: warning: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers] Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Palmer Dabbelt <palmer@sifive.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.