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| H A D | io.h | diff c1d55d50 Wed Jul 29 12:03:14 GMT 2020 Stafford Horne <shorne@gmail.com> asm-generic/io.h: Fix sparse warnings on big-endian architectures
On big-endian architectures like OpenRISC, sparse outputs below warnings on
asm-generic/io.h. This is due to io statements like:
__raw_writel(cpu_to_le32(value), PCI_IOBASE + addr);
The __raw_writel() function expects native endianness, however
cpu_to_le32() returns __le32. On little-endian machines these match up
and there is no issue. However, on big-endian we get warnings, for IO
that is defined as little-endian the mismatch is expected.
The fix I propose is to __force to native endian.
Warnings:
./include/asm-generic/io.h:166:15: warning: cast to restricted __le16
./include/asm-generic/io.h:166:15: warning: cast to restricted __le16
./include/asm-generic/io.h:166:15: warning: cast to restricted __le16
./include/asm-generic/io.h:166:15: warning: cast to restricted __le16
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:179:15: warning: cast to restricted __le32
./include/asm-generic/io.h:215:22: warning: incorrect type in argument 1 (different base types)
./include/asm-generic/io.h:215:22: expected unsigned short [usertype] value
./include/asm-generic/io.h:215:22: got restricted __le16 [usertype]
./include/asm-generic/io.h:225:22: warning: incorrect type in argument 1 (different base types)
./include/asm-generic/io.h:225:22: expected unsigned int [usertype] value
./include/asm-generic/io.h:225:22: got restricted __le32 [usertype]
Signed-off-by: Stafford Horne <shorne@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
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