On 3/10/23 02:45, Baoquan He wrote:
On 03/09/23 at 03:36pm, Thomas Bogendoerfer wrote:
On Wed, Mar 08, 2023 at 09:07:09PM +0800, Baoquan He wrote:
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.
Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: linux-alpha@xxxxxxxxxxxxxxx
Cc: linux-hexagon@xxxxxxxxxxxxxxx
Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxxx
Cc: linux-parisc@xxxxxxxxxxxxxxx
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-sh@xxxxxxxxxxxxxxx
Cc: sparclinux@xxxxxxxxxxxxxxx
---
Documentation/driver-api/device-io.rst | 9 +++++----
arch/alpha/include/asm/io.h | 1 -
arch/hexagon/include/asm/io.h | 3 ---
arch/m68k/include/asm/kmap.h | 1 -
arch/mips/include/asm/io.h | 1 -
arch/parisc/include/asm/io.h | 2 --
arch/powerpc/include/asm/io.h | 1 -
arch/sh/include/asm/io.h | 2 --
arch/sparc/include/asm/io_64.h | 1 -
9 files changed, 5 insertions(+), 16 deletions(-)
this doesn't apply to v6.3-rc1... what tree is this based on ?
Sorry, I forgot mentioning this in cover letter. This series is
followup of below patchset, so it's on top of below patchset and based
on v6.3-rc1.
https://lore.kernel.org/all/20230301034247.136007-1-bhe@xxxxxxxxxx/T/#u
[PATCH v5 00/17] mm: ioremap: Convert architectures to take GENERIC_IOREMAP way
I've applied both patch series on top of v6.3-rc1 and
tested it with success on the parisc platform (32- and 64-bit kernel).
You may add to both patch series:
Acked-by: Helge Deller <deller@xxxxxx> # parisc
Thank you!
Helge
