Increasing DMA block memory allocation to 2048k on all relevant kernels. https://forum.armbian.com/index.php?/topic/4811-uas-mainline-kernel-coherent-pool-memory-size

patch/kernel/cubox-default/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/cubox-dev/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/cubox-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/mvebu-default/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/mvebu64-default/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/mvebu64-dev/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/mvebu64-next/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/odroidc2-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/odroidxu4-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/rda8810-default/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/rk3328-default/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/rk3328-dev/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/rockchip-default/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/rockchip-dev/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/rockchip-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/s500-default/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/s5p6818-dev/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/sun50i-dev/arm64_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 3216e09..21bce28
+--- a/arch/arm64/mm/dma-mapping.c
++++ b/arch/arm64/mm/dma-mapping.c
+@@ -44,7 +44,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
+
+ static struct gen_pool *atomic_pool;
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_2M
+ static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
+
+ static int __init early_coherent_pool(char *p)

patch/kernel/sun8i-dev/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/sunxi-dev/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/sunxi-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/udoo-default/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/udoo-dev/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;

patch/kernel/udoo-neo-default/3.10-3.14_increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index 49ac222..4c96350
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -334,7 +334,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 	vunmap(cpu_addr);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+
+ struct dma_pool {
+ 	size_t size;

patch/kernel/udoo-next/increasing_DMA_block_memory_allocation_to_2048.patch

@@ -0,0 +1,15 @@
+diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
+old mode 100644
+new mode 100755
+index bd83c53..af7cfe3
+--- a/arch/arm/mm/dma-mapping.c
++++ b/arch/arm/mm/dma-mapping.c
+@@ -374,7 +374,7 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
+ 			VM_ARM_DMA_CONSISTENT | VM_USERMAP);
+ }
+
+-#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
++#define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_2M
+ static struct gen_pool *atomic_pool;
+
+ static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;