redonkable/alistair23-linux
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Input: wacom - use unaligned access where necessary

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A few cases of incorrectly using 'le16_to_cpup' instead of
'get_unaligned_le16' have been noticed and fixed.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Jason Gerecke 2014-05-14 16:53:30 -07:00 committed by Dmitry Torokhov
parent 879f99ef2c
commit edc8e20af7
1 changed files with 9 additions and 9 deletions
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18
drivers/input/tablet/wacom_wac.c
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@ -928,12 +928,12 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
if (touch) {
int t_x = le16_to_cpup((__le16 *)&data[offset + 2]);
int c_x = le16_to_cpup((__le16 *)&data[offset + 4]);
int t_y = le16_to_cpup((__le16 *)&data[offset + 6]);
int c_y = le16_to_cpup((__le16 *)&data[offset + 8]);
int w = le16_to_cpup((__le16 *)&data[offset + 10]);
int h = le16_to_cpup((__le16 *)&data[offset + 12]);
int t_x = get_unaligned_le16(&data[offset + 2]);
int c_x = get_unaligned_le16(&data[offset + 4]);
int t_y = get_unaligned_le16(&data[offset + 6]);
int c_y = get_unaligned_le16(&data[offset + 8]);
int w = get_unaligned_le16(&data[offset + 10]);
int h = get_unaligned_le16(&data[offset + 12]);
input_report_abs(input, ABS_MT_POSITION_X, t_x);
input_report_abs(input, ABS_MT_POSITION_Y, t_y);
@ -978,7 +978,7 @@ static int wacom_mt_touch(struct wacom_wac *wacom)
for (i = 0; i < contacts_to_send; i++) {
int offset = (WACOM_BYTES_PER_MT_PACKET + x_offset) * i + 3;
bool touch = data[offset] & 0x1;
int id = le16_to_cpup((__le16 *)&data[offset + 1]);
int id = get_unaligned_le16(&data[offset + 1]);
int slot = input_mt_get_slot_by_key(input, id);
if (slot < 0)
@ -987,8 +987,8 @@ static int wacom_mt_touch(struct wacom_wac *wacom)
input_mt_slot(input, slot);
input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
if (touch) {
int x = le16_to_cpup((__le16 *)&data[offset + x_offset + 7]);
int y = le16_to_cpup((__le16 *)&data[offset + x_offset + 9]);
int x = get_unaligned_le16(&data[offset + x_offset + 7]);
int y = get_unaligned_le16(&data[offset + x_offset + 9]);
input_report_abs(input, ABS_MT_POSITION_X, x);
input_report_abs(input, ABS_MT_POSITION_Y, y);
}