The function of_dma_configure() was recently added to bcma by
commit defb893fffef ("bcma: use of_dma_configure() to set initial dma
mask") which is available since v4.1 kernel. Providing a full backport
of that function is tricky so patching bcma to get behaviour as before
the mentioned commit.
Signed-off-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
---
.../backport-adjustments/bcma_of_dma_configure.patch | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 patches/backport-adjustments/bcma_of_dma_configure.patch
diff --git a/patches/backport-adjustments/bcma_of_dma_configure.patch b/patches/backport-adjustments/bcma_of_dma_configure.patch
new file mode 100644
index 0000000..e1da42f
--- /dev/null
+++ b/patches/backport-adjustments/bcma_of_dma_configure.patch
@@ -0,0 +1,19 @@
+diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
+index 2c1798e..6060a57 100644
+--- a/drivers/bcma/main.c
++++ b/drivers/bcma/main.c
+@@ -209,8 +209,11 @@ static void bcma_of_fill_device(struct platform_device *parent,
+ core->dev.of_node = node;
+
+ core->irq = bcma_of_get_irq(parent, core, 0);
+-
++#if LINUX_VERSION_CODE > KERNEL_VERSION(4,0,0)
+ of_dma_configure(&core->dev, node);
++#else
++ core->dev.dma_mask = &core->dev.coherent_dma_mask;
++#endif
+ }
+
+ unsigned int bcma_core_irq(struct bcma_device *core, int num)
+--
+1.9.1
--
1.9.1
--
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