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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0390-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0390-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0390-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch b/target/linux/brcm2708/patches-4.4/0390-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch
new file mode 100644
index 0000000..d99355d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0390-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch
@@ -0,0 +1,35 @@
+From 31c4d45f25abd0680e05775f3166ec6066e39a2a Mon Sep 17 00:00:00 2001
+From: Martin Sperl <kernel@martin.sperl.org>
+Date: Fri, 22 Apr 2016 17:17:22 +0000
+Subject: [PATCH] Revert "bcm2835-dma: Limit cyclic transfers on lite channels
+ to 32k"
+
+This reverts commit 052c2005b6ecedc5abad86632f5781adda310aa7.
+---
+ drivers/dma/bcm2835-dma.c | 8 +-------
+ 1 file changed, 1 insertion(+), 7 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -144,12 +144,6 @@ struct bcm2835_desc {
+ */
+ #define MAX_LITE_TRANSFER (SZ_64K - 4)
+
+-/*
+- * Transfers larger than 32k cause issues with the bcm2708-i2s driver,
+- * so limit transfer size to 32k as bcm2708-dmaengine did.
+- */
+-#define MAX_CYCLIC_LITE_TRANSFER SZ_32K
+-
+ static inline struct bcm2835_dmadev *to_bcm2835_dma_dev(struct dma_device *d)
+ {
+ return container_of(d, struct bcm2835_dmadev, ddev);
+@@ -418,7 +412,7 @@ static struct dma_async_tx_descriptor *b
+ d->c = c;
+ d->dir = direction;
+ if (c->ch >= 8) /* LITE channel */
+- max_size = MAX_CYCLIC_LITE_TRANSFER;
++ max_size = MAX_LITE_TRANSFER;
+ else
+ max_size = MAX_NORMAL_TRANSFER;
+ period_len = min(period_len, max_size);