From: Lv Zheng Date: Wed, 14 Dec 2016 07:04:33 +0000 (+0800) Subject: ACPICA: Tables: Allow FADT to be customized with virtual address X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=66360faa4333babc53836c7b59a0cff68cb0a9c6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ACPICA: Tables: Allow FADT to be customized with virtual address ACPICA commit d98de9ca14891130efc5dcdc871b97eb27b4b0f5 FADT parsing code requires FADT to be installed as ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, using new acpi_tb_get_table()/acpi_tb_put_table(), other address types can also be allowed, thus facilitates FADT customization with virtual address. Lv Zheng. Link: https://github.com/acpica/acpica/commit/d98de9ca Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 5fb838e592dc..81473a4880ce 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -311,6 +311,8 @@ void acpi_tb_parse_fadt(void) { u32 length; struct acpi_table_header *table; + struct acpi_table_desc *fadt_desc; + acpi_status status; /* * The FADT has multiple versions with different lengths, @@ -319,14 +321,12 @@ void acpi_tb_parse_fadt(void) * Get a local copy of the FADT and convert it to a common format * Map entire FADT, assumed to be smaller than one page. */ - length = acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index].length; - - table = - acpi_os_map_memory(acpi_gbl_root_table_list. - tables[acpi_gbl_fadt_index].address, length); - if (!table) { + fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index]; + status = acpi_tb_get_table(fadt_desc, &table); + if (ACPI_FAILURE(status)) { return; } + length = fadt_desc->length; /* * Validate the FADT checksum before we copy the table. Ignore @@ -340,7 +340,7 @@ void acpi_tb_parse_fadt(void) /* All done with the real FADT, unmap it */ - acpi_os_unmap_memory(table, length); + acpi_tb_put_table(fadt_desc); /* Obtain the DSDT and FACS tables via their addresses within the FADT */