diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2016-08-02 02:44:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-22 11:24:28 -0300 |
| commit | bacf8351f23cfdccb0cd252e3df0f82871896f9a (patch) | |
| tree | 3c25935a22acd65cfc9190bf16e5a085da556333 | |
| parent | d14f291b6280a675b7bf129aa9a2d7a077554a31 (diff) | |
[media] media: rc: nuvoton: remove usage of b_idx in nvt_get_rx_ir_data
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@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| -rw-r--r-- | drivers/media/rc/nuvoton-cir.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c index 0c69536ea813..e4158a962c7a 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); |