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| author | Baoquan He <bhe@redhat.com> | 2023-09-21 19:04:23 +0800 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2023-11-23 10:32:52 +0100 |
| commit | 026246f114d925b2ab97a60e8b4a5506bd035e9c (patch) | |
| tree | 82aa56239047ff7599e10032876ff6481fc45560 /arch/hexagon | |
| parent | 4bfb53e7d317c01f296b2feb2fae7c421c1d52dc (diff) | |
| download | lwn-026246f114d925b2ab97a60e8b4a5506bd035e9c.tar.gz lwn-026246f114d925b2ab97a60e8b4a5506bd035e9c.zip | |
arch/*/io.h: remove ioremap_uc in some architectures
ioremap_uc() is only meaningful on old x86-32 systems with the PAT
extension, and on ia64 with its slightly unconventional ioremap()
behavior. So remove the ioremap_uc() definition in architecutures
other than x86 and ia64. These architectures all have asm-generic/io.h
included and will have the default ioremap_uc() definition which
returns NULL.
This changes the existing behaviour, while no need to worry about
any breakage because in the only callsite of ioremap_uc(), code
has been adjusted to eliminate the impact. Please see
atyfb_setup_generic() of drivers/video/fbdev/aty/atyfb_base.c.
If any new invocation of ioremap_uc() need be added, please consider
using ioremap() intead or adding a ARCH specific version if necessary.
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Acked-by: Helge Deller <deller@gmx.de> # parisc
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> (SuperH)
Cc: linux-alpha@vger.kernel.org
Cc: linux-hexagon@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-sh@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/hexagon')
| -rw-r--r-- | arch/hexagon/include/asm/io.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h index e2b308e32a37..b7bc246dbcb1 100644 --- a/arch/hexagon/include/asm/io.h +++ b/arch/hexagon/include/asm/io.h @@ -174,9 +174,6 @@ static inline void writel(u32 data, volatile void __iomem *addr) #define _PAGE_IOREMAP (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ (__HEXAGON_C_DEV << 6)) -#define ioremap_uc(addr, size) ioremap((addr), (size)) - - #define __raw_writel writel static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, |