1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index a56fe373e8f9..6d66e233a191 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -503,8 +503,12 @@ static int bcm2835_dma_alloc_chan_resources(struct dma_chan *chan)
 
         dev_dbg(dev, "Allocating DMA channel %d\n", c->ch);
 
+        /*
+         * Control blocks are 256 bit in length and must start at a 256 bit
+         * (32 byte) aligned address (BCM2835 ARM Peripherals, sec. 4.2.1.1).
+         */
         c->cb_pool = dma_pool_create(dev_name(dev), dev,
-                                     sizeof(struct bcm2835_dma_cb), 0, 0);
+                                     sizeof(struct bcm2835_dma_cb), 32, 0);
         if (!c->cb_pool) {
                 dev_err(dev, "unable to allocate descriptor pool\n");
                 return -ENOMEM;