dmaengine: mmp_tdma: share the IRQ line

On a MMP2, the DMA interrupt is shared by all channels of the peripheral
DMA controller and the audio DMA controller. Both drivers can identify
their interrupts, but only the PDMA driver marks the line shared:

  [    1.185782] mmp-pdma d4000000.dma: initialized 16 channels
  [    1.186808] mmp-tdma d42a0800.adma: IRQ index 1 not found
  [    1.194317] genirq: Flags mismatch irq 64. 00000000 (tdma) vs. 00000080 (pdma)
  [    1.197894] mmp-tdma: probe of d42a0800.adma failed with error -16

Let's turn on IRQF_SHARED in the ADMA driver as well.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200601192252.172773-1-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index dbc6a48424fa13ba53e4f7c79b45e135fc4058a1..960c7c40aef701d0149f185a73738c5f0e120635 100644 (file)
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -682,7 +682,7 @@ static int mmp_tdma_probe(struct platform_device *pdev)
        if (irq_num != chan_num) {
                irq = platform_get_irq(pdev, 0);
                ret = devm_request_irq(&pdev->dev, irq,
-                       mmp_tdma_int_handler, 0, "tdma", tdev);
+                       mmp_tdma_int_handler, IRQF_SHARED, "tdma", tdev);
                if (ret)
                        return ret;
        }