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 Thanks Baoquan
