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| author | Lv Zheng <lv.zheng@intel.com> | 2017-08-03 14:26:19 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-08-03 23:34:15 +0200 |
| commit | 4eebedd8f1a6609739c2e9a9b020791b23cbcceb (patch) | |
| tree | 0f971e4f5bda4df87f5b2153d11b88b958ec8472 /drivers | |
| parent | ab539eaa50c6a97f1d6287c5ce3ee75155cb10b8 (diff) | |
| download | linux-4eebedd8f1a6609739c2e9a9b020791b23cbcceb.tar.gz linux-4eebedd8f1a6609739c2e9a9b020791b23cbcceb.tar.bz2 linux-4eebedd8f1a6609739c2e9a9b020791b23cbcceb.zip | |
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.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/spcr.c | 9 |
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; } |