From aa2624a3bd5fef0e81107d602a1429a571cabe49 Mon Sep 17 00:00:00 2001 From: Sanjay R Mehta Date: Mon, 18 Dec 2017 20:48:30 +0530 Subject: [PATCH 1112/4131] ASoC: AMD: Enable pci bus-mastering for ACP3.x device By default DMA bus-mastering is disabled in uefi boot mode for ACP3.x device, so pci_set_master() api need to be invoked explicitly to set the DMA bit in the ACP3.x PCI_COMMAND register. Signed-off-by: Sanjay R Mehta Signed-off-by: Vijendar Mukunda --- sound/soc/amd/raven/pci-acp3x.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c index 5891c5b..0d39aa8 100644 --- a/sound/soc/amd/raven/pci-acp3x.c +++ b/sound/soc/amd/raven/pci-acp3x.c @@ -70,6 +70,9 @@ static int snd_acp3x_probe(struct pci_dev *pci, goto release_regions; } + /* set pci bus-mastering */ + pci_set_master(pci); + pci_set_drvdata(pci, adata); val = rv_readl(adata->acp3x_base + mmACP_I2S_PIN_CONFIG); -- 2.7.4