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Subject[PATCH 3/4] acpi: multi proc support
Date
Now, it is possible to pass two or more handlers.

Signed-off-by: Lukasz Anaczkowski <lukasz.anaczkowski@intel.com>
---
drivers/acpi/tables.c | 31 ++++++++++++++++++++++++++-----
1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 33539ee..ececeac 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -214,6 +214,22 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
}
}

+/**
+ * acpi_parse_entries - for each proc_num find a subtable with proc->id
+ * and run proc->handler on it. Assumption is that there's only
+ * single handler for particular entry id.
+ *
+ * @id: table id (for debugging purposes)
+ * @table_size: single entry size
+ * @table_header: where does the table start?
+ * @proc: array of acpi_subtable_proc struct containing entry id
+ * and associated handler with it
+ * @proc_num: how big proc is?
+ * @max_entries: how many entries can we process?
+ *
+ * On success returns sum of all matching entries for all proc handlers.
+ * Oterwise, -ENODEV or -EINVAL is returned.
+ */
int __init
acpi_parse_entries(char *id, unsigned long table_size,
struct acpi_table_header *table_header,
@@ -247,13 +263,20 @@ acpi_parse_entries(char *id, unsigned long table_size,

while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
table_end) {
- if (entry->type == proc->id
- && (!max_entries || count < max_entries)) {
- if (!proc->handler || proc->handler(entry, table_end))
+ if (max_entries && count >= max_entries)
+ break;
+
+ for (i = 0; i < proc_num; i++) {
+ if (entry->type != proc[i].id)
+ continue;
+ if (!proc->handler || proc[i].handler(entry, table_end)) {
return -EINVAL;

proc->count++;
+ break;
}
+ if (i != proc_num)
+ count++;

/*
* If entry->length is 0, break from this loop to avoid
@@ -268,8 +291,6 @@ acpi_parse_entries(char *id, unsigned long table_size,
((unsigned long)entry + entry->length);
}

- count = proc->count;
-
if (max_entries && count > max_entries) {
pr_warn("[%4.4s:0x%02x] ignored %i entries of %i found\n",
id, proc->id, count - max_entries, count);
--
1.8.3.1


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