[media] nuvoton-cir: fix wake from suspend

The CIR Wake FIFO is 67 bytes long, but the stock remote appears to only
populate 65 of them. Limit comparison to 65 bytes, and wake from suspend
works a whole lot better (it wasn't working at all for most folks).

Fix based on comparison with the old lirc_wb677 driver from Nuvoton,
debugging and testing done by Dave Treacy by way of the lirc mailing
list.

Reported-by: Dave Treacy <davetreacy@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c
index 273d9d674792..d4d64492a057 100644
--- a/drivers/media/rc/nuvoton-cir.c
+++ b/drivers/media/rc/nuvoton-cir.c
@@ -385,8 +385,9 @@ static void nvt_cir_regs_init(struct nvt_dev *nvt)
 
 static void nvt_cir_wake_regs_init(struct nvt_dev *nvt)
 {
-        /* set number of bytes needed for wake key comparison (default 67) */
-        nvt_cir_wake_reg_write(nvt, CIR_WAKE_FIFO_LEN, CIR_WAKE_FIFO_CMP_DEEP);
+        /* set number of bytes needed for wake from s3 (default 65) */
+        nvt_cir_wake_reg_write(nvt, CIR_WAKE_FIFO_CMP_BYTES,
+                               CIR_WAKE_FIFO_CMP_DEEP);
 
         /* set tolerance/variance allowed per byte during wake compare */
         nvt_cir_wake_reg_write(nvt, CIR_WAKE_CMP_TOLERANCE,