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author | Mark Salter <msalter@redhat.com> | 2015-03-24 14:02:36 +0000 |
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committer | Will Deacon <will.deacon@arm.com> | 2015-03-25 11:49:30 +0000 |
commit | b2cedba09dd7034c144c03eadc09ee1e4d791590 (patch) | |
tree | b6e3fb04ae9e3efbcb895d591fa22dd1faac04bb /arch/arm64/include/asm/acenv.h | |
parent | aafc65c731fe2e6020850cd87ba69e96aaf38649 (diff) | |
download | linux-b2cedba09dd7034c144c03eadc09ee1e4d791590.tar.bz2 |
ARM64: allow late use of early_ioremap
Commit 0e63ea48b4d8 (arm64/efi: add missing call to early_ioremap_reset())
added a missing call to early_ioremap_reset(). This triggers a BUG if code
tries using early_ioremap() after the early_ioremap_reset(). This is a
problem for some ACPI code which needs short-lived temporary mappings
after paging_init() but before acpi_early_init() in start_kernel(). This
patch adds definitions for the __late_set_fixmap() and __late_clear_fixmap()
which avoids the BUG by allowing later use of early_ioremap().
CC: Leif Lindholm <leif.lindholm@linaro.org>
CC: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
Tested-by: Robert Richter <rrichter@cavium.com>
Tested-by: Timur Tabi <timur@codeaurora.org>
Acked-by: Robert Richter <rrichter@cavium.com>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/acenv.h')
0 files changed, 0 insertions, 0 deletions