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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1112-ASoC-AMD-Enable-pci-bus-mastering-for-ACP3.x-device.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1112-ASoC-AMD-Enable-pci-bus-mastering-for-ACP3.x-device.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1112-ASoC-AMD-Enable-pci-bus-mastering-for-ACP3.x-device.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1112-ASoC-AMD-Enable-pci-bus-mastering-for-ACP3.x-device.patch
new file mode 100644
index 00000000..c6a89f7d
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1112-ASoC-AMD-Enable-pci-bus-mastering-for-ACP3.x-device.patch
@@ -0,0 +1,34 @@
+From aa2624a3bd5fef0e81107d602a1429a571cabe49 Mon Sep 17 00:00:00 2001
+From: Sanjay R Mehta <Sanju.Mehta@amd.com>
+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 <Sanju.Mehta@amd.com>
+Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
+---
+ 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
+