The call to nvt_get_rx_ir_data and nvt_process_rx_ir_data from
the ISR is protected with spinlock nvt->lock. Therefore it's
guaranteed that nvt->pkts is 0 when entering nvt_get_rx_ir_data
(as nvt->pkts is set to 0 at the end of nvt_process_rx_ir_data).
Having said that we can remove b_idx.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
drivers/media/rc/nuvoton-cir.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c
index 0c69536..e4158a9 100644
--- a/drivers/media/rc/nuvoton-cir.c
+++ b/drivers/media/rc/nuvoton-cir.c
@@ -802,7 +802,6 @@ static void nvt_handle_rx_fifo_overrun(struct nvt_dev *nvt)
static void nvt_get_rx_ir_data(struct nvt_dev *nvt)
{
u8 fifocount, val;
- unsigned int b_idx;
int i;
/* Get count of how many bytes to read from RX FIFO */
@@ -810,21 +809,13 @@ static void nvt_get_rx_ir_data(struct nvt_dev *nvt)
nvt_dbg("attempting to fetch %u bytes from hw rx fifo", fifocount);
- b_idx = nvt->pkts;
-
- /* This should never happen, but lets check anyway... */
- if (b_idx + fifocount > RX_BUF_LEN) {
- nvt_process_rx_ir_data(nvt);
- b_idx = 0;
- }
-
/* Read fifocount bytes from CIR Sample RX FIFO register */
for (i = 0; i < fifocount; i++) {
val = nvt_cir_reg_read(nvt, CIR_SRXFIFO);
- nvt->buf[b_idx + i] = val;
+ nvt->buf[i] = val;
}
- nvt->pkts += fifocount;
+ nvt->pkts = fifocount;
nvt_dbg("%s: pkts now %d", __func__, nvt->pkts);
nvt_process_rx_ir_data(nvt);
--
2.9.2
--
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