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authorLv Zheng <lv.zheng@intel.com>2017-08-03 09:26:19 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-08-04 00:34:15 +0300
commit4eebedd8f1a6609739c2e9a9b020791b23cbcceb (patch)
tree0f971e4f5bda4df87f5b2153d11b88b958ec8472 /drivers
parentab539eaa50c6a97f1d6287c5ce3ee75155cb10b8 (diff)
downloadlinux-4eebedd8f1a6609739c2e9a9b020791b23cbcceb.tar.xz
ACPICA: Divergences: reduce access size definitions
ACPICA commit cf27b3c98883d2a15d932016792fcb8272ace96d The following commit introduces definition of access width to ACPICA. Commit: 2bece49394872d36bbc5767fd643deac05920c55 Subject: ACPI: SPCR: Use access width to determine mmio usage Actually the access bit width can be calculated via access width. It would be better to define a macro calculating bit width rather than defining fixed values. This patch thus cleans up the definitions to reduce divergences. Link: https://github.com/acpica/acpica/commit/cf27b3c9 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/acpica/hwregs.c2
-rw-r--r--drivers/acpi/spcr.c9
2 files changed, 6 insertions, 5 deletions
diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c
index de74a4c25085..acb417b58bbb 100644
--- a/drivers/acpi/acpica/hwregs.c
+++ b/drivers/acpi/acpica/hwregs.c
@@ -107,7 +107,7 @@ acpi_hw_get_access_bit_width(u64 address,
ACPI_IS_ALIGNED(reg->bit_width, 8)) {
access_bit_width = reg->bit_width;
} else if (reg->access_width) {
- access_bit_width = (1 << (reg->access_width + 2));
+ access_bit_width = ACPI_ACCESS_BIT_WIDTH(reg->access_width);
} else {
access_bit_width =
ACPI_ROUND_UP_POWER_OF_TWO_8(reg->bit_offset +
diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index 4ac3e06b41d8..1230f969256b 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -95,16 +95,17 @@ int __init parse_spcr(bool earlycon)
}
if (table->serial_port.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
- switch (table->serial_port.access_width) {
+ switch (ACPI_ACCESS_BIT_WIDTH((
+ table->serial_port.access_width))) {
default:
pr_err("Unexpected SPCR Access Width. Defaulting to byte size\n");
- case ACPI_ACCESS_SIZE_BYTE:
+ case 8:
iotype = "mmio";
break;
- case ACPI_ACCESS_SIZE_WORD:
+ case 16:
iotype = "mmio16";
break;
- case ACPI_ACCESS_SIZE_DWORD:
+ case 32:
iotype = "mmio32";
break;
}