On 01/14/2015 09:04 AM, Hanjun Guo wrote:
From: Mark Salter msalter@redhat.com
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().
Signed-off-by: Mark Salter msalter@redhat.com CC: Leif Lindholm leif.lindholm@linaro.org CC: Ard Biesheuvel ard.biesheuvel@linaro.org [hj: update the change log] Signed-off-by: Hanjun Guo hanjun.guo@linaro.org
Tested-by: Mark Langsdorf mlangsdo@redhat.com