target/linux/brcm2708/patches-4.4/0391-Revert-bcm2835-dma-Limit-cyclic-transfers-on-lite-ch.patch

   1 From 0bdc822d579b856a40a24f8c58765d2200f15099 Mon Sep 17 00:00:00 2001
   2 From: Martin Sperl <kernel@martin.sperl.org>
   3 Date: Fri, 22 Apr 2016 17:17:22 +0000
   4 Subject: [PATCH 391/423] Revert "bcm2835-dma: Limit cyclic transfers on lite
   5  channels to 32k"
   6
   7 This reverts commit 052c2005b6ecedc5abad86632f5781adda310aa7.
   8 ---
   9  drivers/dma/bcm2835-dma.c | 8 +-------
  10  1 file changed, 1 insertion(+), 7 deletions(-)
  11
  12 --- a/drivers/dma/bcm2835-dma.c
  13 +++ b/drivers/dma/bcm2835-dma.c
  14 @@ -144,12 +144,6 @@ struct bcm2835_desc {
  15   */
  16  #define MAX_LITE_TRANSFER      (SZ_64K - 4)
  17
  18 -/*
  19 - * Transfers larger than 32k cause issues with the bcm2708-i2s driver,
  20 - * so limit transfer size to 32k as bcm2708-dmaengine did.
  21 - */
  22 -#define MAX_CYCLIC_LITE_TRANSFER       SZ_32K
  23 -
  24  static inline struct bcm2835_dmadev *to_bcm2835_dma_dev(struct dma_device *d)
  25  {
  26         return container_of(d, struct bcm2835_dmadev, ddev);
  27 @@ -418,7 +412,7 @@ static struct dma_async_tx_descriptor *b
  28         d->c = c;
  29         d->dir = direction;
  30         if (c->ch >= 8) /* LITE channel */
  31 -               max_size = MAX_CYCLIC_LITE_TRANSFER;
  32 +               max_size = MAX_LITE_TRANSFER;
  33         else
  34                 max_size = MAX_NORMAL_TRANSFER;
  35         period_len = min(period_len, max_size);