diff options
Diffstat (limited to 'drivers/dma/shdma.c')
| -rw-r--r-- | drivers/dma/shdma.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index 6a21cd843ab7..0f3ec8d57a7a 100644 --- a/drivers/dma/shdma.c +++ b/drivers/dma/shdma.c @@ -194,6 +194,9 @@ static void dmae_start(struct sh_dmae_chan *sh_chan) struct sh_dmae_device *shdev = to_sh_dev(sh_chan); u32 chcr = chcr_read(sh_chan); + if (shdev->pdata->needs_tend_set) + sh_dmae_writel(sh_chan, 0xFFFFFFFF, TEND); + chcr |= CHCR_DE | shdev->chcr_ie_bit; chcr_write(sh_chan, chcr & ~CHCR_TE); } @@ -242,6 +245,9 @@ static int dmae_set_dmars(struct sh_dmae_chan *sh_chan, u16 val) if (dmae_is_busy(sh_chan)) return -EBUSY; + if (pdata->no_dmars) + return 0; + /* in the case of a missing DMARS resource use first memory window */ if (!addr) addr = (u16 __iomem *)shdev->chan_reg; |