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ACPI / tables: improve comments regarding acpi_parse_entries_array() 

I found the description of the table_size argument to the function
acpi_parse_entries_array() unclear and ambiguous.  This is a minor
documentation change to improve that description so I don't misuse
the argument again in the future, and it is hopefully clearer to
other future users.

Signed-off-by: Al Stone <ahs3@redhat.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Al Stone 2018-04-30 18:39:05 -06:00 committed by Rafael J. Wysocki
parent 75bc37fefc
commit 904aaf8050
1 changed files with 7 additions and 2 deletions
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7
drivers/acpi/tables.c
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@ -222,7 +222,7 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
* acpi_parse_entries_array - for each proc_num find a suitable subtable * acpi_parse_entries_array - for each proc_num find a suitable subtable
* *
* @id: table id (for debugging purposes) * @id: table id (for debugging purposes)
* @table_size: single entry size * @table_size: size of the root table
* @table_header: where does the table start? * @table_header: where does the table start?
* @proc: array of acpi_subtable_proc struct containing entry id * @proc: array of acpi_subtable_proc struct containing entry id
* and associated handler with it * and associated handler with it
@ -233,6 +233,11 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
* on it. Assumption is that there's only single handler for particular * on it. Assumption is that there's only single handler for particular
* entry id. * entry id.
* *
* The table_size is not the size of the complete ACPI table (the length
* field in the header struct), but only the size of the root table; i.e.,
* the offset from the very first byte of the complete ACPI table, to the
* first byte of the very first subtable.
*
* On success returns sum of all matching entries for all proc handlers. * On success returns sum of all matching entries for all proc handlers.
* Otherwise, -ENODEV or -EINVAL is returned. * Otherwise, -ENODEV or -EINVAL is returned.
*/ */