V4L/DVB (6050): ivtv: retry/timer improvements

- Give up frame after three retries.
- When the last capture/decode ends, make sure to delete the dma_timer.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/ivtv/ivtv-irq.c b/drivers/media/video/ivtv/ivtv-irq.c
index 7272f1a..d68853f 100644 (file)
--- a/drivers/media/video/ivtv/ivtv-irq.c
+++ b/drivers/media/video/ivtv/ivtv-irq.c
@@ -494,7 +494,9 @@ static void ivtv_irq_dma_read(struct ivtv *itv)
                                        s->sg_processed, s->sg_processing_size, itv->dma_retries);
                        write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS);
                        if (itv->dma_retries == 3) {
+                               /* Too many retries, give up on this frame */
                                itv->dma_retries = 0;
+                               s->sg_processed = s->sg_processing_size;
                        }
                        else {
                                /* Retry, starting with the first xfer segment.
@@ -554,7 +556,9 @@ static void ivtv_irq_enc_dma_complete(struct ivtv *itv)
                        s->dma_offset, s->sg_processed, s->sg_processing_size, itv->dma_retries);
                write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS);
                if (itv->dma_retries == 3) {
+                       /* Too many retries, give up on this frame */
                        itv->dma_retries = 0;
+                       s->sg_processed = s->sg_processing_size;
                }
                else {
                        /* Retry, starting with the first xfer segment.

diff --git a/drivers/media/video/ivtv/ivtv-streams.c b/drivers/media/video/ivtv/ivtv-streams.c
index 4272fbc..2e63201 100644 (file)
--- a/drivers/media/video/ivtv/ivtv-streams.c
+++ b/drivers/media/video/ivtv/ivtv-streams.c
@@ -816,6 +816,7 @@ int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
 
        /* Set the following Interrupt mask bits for capture */
        ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
+       del_timer(&itv->dma_timer);
 
        /* event notification (off) */
        if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
@@ -873,6 +874,7 @@ int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
        ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
 
        ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
+       del_timer(&itv->dma_timer);
 
        clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
        clear_bit(IVTV_F_S_STREAMING, &s->s_flags);