diff options
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.patch | 35 |
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 0000000000..d99355d17b --- /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); |