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HID: playstation: fix DualShock4 bluetooth CRC endian issue. 

The driver was by accident reading the CRC directly from a hardware
structure instead of using get_unaligned_le32.

Fixes: 2d77474a23 ("HID: playstation: add DualShock4 bluetooth support.")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Roderick Colenbrander 2022-11-16 08:00:22 -08:00 committed by Jiri Kosina
parent 54980d30ef
commit da03e502bb
1 changed files with 2 additions and 1 deletions
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3
drivers/hid/hid-playstation.c
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@ -2131,9 +2131,10 @@ static int dualshock4_parse_report(struct ps_device *ps_dev, struct hid_report *
} else if (hdev->bus == BUS_BLUETOOTH && report->id == DS4_INPUT_REPORT_BT &&
size == DS4_INPUT_REPORT_BT_SIZE) {
struct dualshock4_input_report_bt *bt = (struct dualshock4_input_report_bt *)data;
uint32_t report_crc = get_unaligned_le32(&bt->crc32);
/* Last 4 bytes of input report contains CRC. */
if (!ps_check_crc32(PS_INPUT_CRC32_SEED, data, size - 4, bt->crc32)) {
if (!ps_check_crc32(PS_INPUT_CRC32_SEED, data, size - 4, report_crc)) {
hid_err(hdev, "DualShock4 input CRC's check failed\n");
return -EILSEQ;
}