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[media] cx23885: Stop the risc video fifo before reconfiguring it 

Safety reasons. We shouldn't be trying to reconfigure a risc
processor instruction queue unless it's stopped.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
hifive-unleashed-5.1
Steven Toth 2011-10-10 11:09:56 -03:00 committed by Mauro Carvalho Chehab
parent 19696f09da
commit a461e0ad3d
1 changed files with 3 additions and 0 deletions
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3
drivers/media/video/cx23885/cx23885-video.c
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@ -549,6 +549,9 @@ static int cx23885_start_video_dma(struct cx23885_dev *dev,
{
dprintk(1, "%s()\n", __func__);
/* Stop the dma/fifo before we tamper with it's risc programs */
cx_clear(VID_A_DMA_CTL, 0x11);
/* setup fifo + format */
cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
buf->bpl, buf->risc.dma);