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authorBenjamin Tissoires <benjamin.tissoires@gmail.com>2012-11-14 16:59:16 +0100
committerJiri Kosina <jkosina@suse.cz>2012-11-15 10:08:14 +0100
commitf262d1fa2c651a5e2f92b6aee8779597631cd5d4 (patch)
treecdb954e3eae7d1aeb462617742ed13217354828f /drivers/hid
parent774638386826621c984ab6994439f474709cac5e (diff)
HID: add usage_index in struct hid_usage.
Currently, there is no way to know the index of the current field in the .input_mapping and .event callbacks when this field is inside an array of HID fields. This patch adds this index to the struct hid_usage so that this information is available to input_mapping and event callbacks. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f5004e2ca0c5..b5974cd45968 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -92,6 +92,7 @@ EXPORT_SYMBOL_GPL(hid_register_report);
static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
{
struct hid_field *field;
+ int i;
if (report->maxfield == HID_MAX_FIELDS) {
hid_err(report->device, "too many fields in report\n");
@@ -110,6 +111,9 @@ static struct hid_field *hid_register_field(struct hid_report *report, unsigned
field->value = (s32 *)(field->usage + usages);
field->report = report;
+ for (i = 0; i < usages; i++)
+ field->usage[i].usage_index = i;
+
return field;
}