diff options
Diffstat (limited to 'drivers/acpi/acpica/exserial.c')
| -rw-r--r-- | drivers/acpi/acpica/exserial.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/exserial.c b/drivers/acpi/acpica/exserial.c index 10d68a5f76a3..6d2581ec22ad 100644 --- a/drivers/acpi/acpica/exserial.c +++ b/drivers/acpi/acpica/exserial.c @@ -3,7 +3,7 @@ * * Module Name: exserial - field_unit support for serial address spaces * - * Copyright (C) 2000 - 2021, Intel Corp. + * Copyright (C) 2000 - 2025, Intel Corp. * *****************************************************************************/ @@ -201,6 +201,12 @@ acpi_ex_read_serial_bus(union acpi_operand_object *obj_desc, function = ACPI_READ; break; + case ACPI_ADR_SPACE_FIXED_HARDWARE: + + buffer_length = ACPI_FFH_INPUT_BUFFER_SIZE; + function = ACPI_READ; + break; + default: return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); } @@ -323,6 +329,12 @@ acpi_ex_write_serial_bus(union acpi_operand_object *source_desc, function = ACPI_WRITE; break; + case ACPI_ADR_SPACE_FIXED_HARDWARE: + + buffer_length = ACPI_FFH_INPUT_BUFFER_SIZE; + function = ACPI_WRITE; + break; + default: return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); } @@ -337,8 +349,7 @@ acpi_ex_write_serial_bus(union acpi_operand_object *source_desc, /* Copy the input buffer data to the transfer buffer */ buffer = buffer_desc->buffer.pointer; - data_length = (buffer_length < source_desc->buffer.length ? - buffer_length : source_desc->buffer.length); + data_length = ACPI_MIN(buffer_length, source_desc->buffer.length); memcpy(buffer, source_desc->buffer.pointer, data_length); /* Lock entire transaction if requested */ |