diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-19 10:33:36 +0100 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-12-19 10:33:36 +0100 |
commit | 01956ef82685c0793214d0bd28889304c7ed9068 (patch) | |
tree | 8d4ec514ba1c9e88cb0fd90871777d4917ff113f /drivers/acpi/acpica/evregion.c | |
parent | 866ced99cbaa08b8dafdc0b0febf49cd6c3cf5a8 (diff) | |
parent | fa8a03bec68d9ef89da72277bd3501ed3daa6217 (diff) |
Merge branch 'github.com/Freescale/linux-fslc/4.14-2.0.x-imx' into toradex_4.14-2.0.x-imx-next
Conflicts:
sound/soc/codecs/sgtl5000.c
Diffstat (limited to 'drivers/acpi/acpica/evregion.c')
-rw-r--r-- | drivers/acpi/acpica/evregion.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 28b447ff92df..3a3277f98292 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -677,6 +677,19 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, ACPI_FUNCTION_TRACE(ev_execute_reg_methods); + /* + * These address spaces do not need a call to _REG, since the ACPI + * specification defines them as: "must always be accessible". Since + * they never change state (never become unavailable), no need to ever + * call _REG on them. Also, a data_table is not a "real" address space, + * so do not call _REG. September 2018. + */ + if ((space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) || + (space_id == ACPI_ADR_SPACE_SYSTEM_IO) || + (space_id == ACPI_ADR_SPACE_DATA_TABLE)) { + return_VOID; + } + info.space_id = space_id; info.function = function; info.reg_run_count = 0; @@ -738,8 +751,8 @@ acpi_ev_reg_run(acpi_handle obj_handle, } /* - * We only care about regions.and objects that are allowed to have address - * space handlers + * We only care about regions and objects that are allowed to have + * address space handlers */ if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) { return (AE_OK); |