diff options
Diffstat (limited to 'recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch')
| -rw-r--r-- | recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch b/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch new file mode 100644 index 000000000..08cd6f99d --- /dev/null +++ b/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch @@ -0,0 +1,47 @@ +From 756f2f1f90524c2620ed7951e436d13bdb929a6b Mon Sep 17 00:00:00 2001 +From: Andrey Shvetsov <andrey.shvetsov@k2l.de> +Date: Mon, 12 Feb 2018 12:25:37 +0100 +Subject: [PATCH] staging: most: dim2: use device for coherent memory allocation + +On several modern architectures the allocation of coherent memory needs +a device that has the dma_ops properly set. This patch enables use of +the DIM2 platform device for the allocation process. + +Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> +--- + hdm-dim2/dim2_hdm.c | 9 +++++++-- + 1 file changed, 7 insertions(+), 2 deletions(-) + +diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c +index 05e1896..1847091 100644 +--- a/hdm-dim2/dim2_hdm.c ++++ b/hdm-dim2/dim2_hdm.c +@@ -688,12 +688,16 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx) + + static void *dma_alloc(struct mbo *mbo, u32 size) + { +- return dma_alloc_coherent(NULL, size, &mbo->bus_address, GFP_KERNEL); ++ struct device *dev = mbo->ifp->dev; ++ ++ return dma_alloc_coherent(dev, size, &mbo->bus_address, GFP_KERNEL); + } + + static void dma_free(struct mbo *mbo, u32 size) + { +- dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address); ++ struct device *dev = mbo->ifp->dev; ++ ++ dma_free_coherent(dev, size, mbo->virt_address, mbo->bus_address); + } + + static const struct of_device_id dim2_of_match[]; +@@ -875,6 +879,7 @@ static int dim2_probe(struct platform_device *pdev) + dev->most_iface.poison_channel = poison_channel; + dev->most_iface.request_netinfo = request_netinfo; + dev->most_iface.extra_attrs = DBR_ATTRS; ++ dev->most_iface.dev = &pdev->dev; + + kobj = most_register_interface(&dev->most_iface); + if (IS_ERR(kobj)) { +-- +libgit2 0.26.0 |