diff options
| author | Chaitanya Bandi <bandik@nvidia.com> | 2012-04-16 17:12:02 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-20 15:20:25 -0700 |
| commit | dff743fd36183a25d9ef83cafaf7e4974e15e6b4 (patch) | |
| tree | edfda9b4a2292270589eef99905e968c3ac4c12d /arch | |
| parent | b26d1dbafda0ff28b3aa2811b185411f67c0a768 (diff) | |
ARM: tegra: dma: Use no DMA interrupts if no callbacks
If there are no callbacks associated with the request,
dma interrupt is not enabled.
Bug 969125
Change-Id: Ifbf2a8d6c474187927ee38af03cb96e53e199b83
Signed-off-by: Chaitanya Bandi <bandik@nvidia.com>
Reviewed-on: http://git-master/r/96724
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/dma.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c index 1c415083e8c4..e4fe67fcba95 100644 --- a/arch/arm/mach-tegra/dma.c +++ b/arch/arm/mach-tegra/dma.c @@ -394,7 +394,8 @@ skip_status: spin_unlock_irqrestore(&ch->lock, irq_flags); /* Callback should be called without any lock */ - req->complete(req); + if(req->complete) + req->complete(req); return 0; } EXPORT_SYMBOL(tegra_dma_dequeue_req); @@ -757,7 +758,10 @@ static void tegra_dma_update_hw(struct tegra_dma_channel *ch, u32 apb_ptr; u32 csr; - csr = CSR_IE_EOC | CSR_FLOW; + csr = CSR_FLOW; + if (req->complete || req->threshold) + csr |= CSR_IE_EOC; + ahb_seq = AHB_SEQ_INTR_ENB; switch (req->req_sel) { |