From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Sat, 18 Aug 2007 18:48:42 +0000 (-0300)
Subject: V4L/DVB (6050): ivtv: retry/timer improvements
X-Git-Tag: v2.6.24-rc1~1463^2~209
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e17a06badaedba89fad989eed409661c89a22e04;p=karo-tx-linux.git

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 7272f1a71dd9..d68853fd60a3 100644
--- 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 4272fbc0bc8b..2e632014c90d 100644
--- 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);