| Message ID | 20210421111759.2059976-2-schnelle@linux.ibm.com |
|---|---|
| State | New |
| Headers | show |
| Series | asm-generic/io.h: Silence -Wnull-pointer-arithmetic warning on PCI_IOBASE | expand |
diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h index 2eefa526b38f..c019e50702c1 100644 --- a/arch/sparc/include/asm/io.h +++ b/arch/sparc/include/asm/io.h @@ -1,6 +1,14 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef ___ASM_SPARC_IO_H #define ___ASM_SPARC_IO_H + +/* + * On LEON PCI addresses below 64k are converted to IO accesses. + * io_remap_xxx() returns a kernel virtual address in the PCI window so + * inb() doesn't need to add an offset. + */ +#define PCI_IOBASE ((void __iomem *)0) + #if defined(__sparc__) && defined(__arch64__) #include <asm/io_64.h> #else
Instead of relying on the fallback in asm-generic/io.h which sets PCI_IOBASE 0 if it is not defined set it explicitly. Link: https://lore.kernel.org/lkml/CAK8P3a3PK9zyeP4ymELtc2ZYnymECoACiigw9Za+pvSJpCk5=g@mail.gmail.com/ Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> --- v1 -> v2: - Improved comment (David Laight) arch/sparc/include/asm/io.h | 8 ++++++++ 1 file changed, 8 insertions(+)