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staging: vc04_services: setup DMA and coherent mask 

VCHI messages between the CPU and firmware use 32-bit
bus addresses. Explicitly set the DMA mask and coherent
on all platforms.

Signed-off-by: Michael Zoran <mzoran@crowfest.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Zoran 2016-10-31 14:02:03 -07:00 committed by Greg Kroah-Hartman
parent dc5424ae0b
commit c01cc53d4e
1 changed files with 9 additions and 0 deletions
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drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
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@ -97,6 +97,15 @@ int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state)
int slot_mem_size, frag_mem_size;
int err, irq, i;
/*
* VCHI messages between the CPU and firmware use
* 32-bit bus addresses.
*/
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (err < 0)
return err;
(void)of_property_read_u32(dev->of_node, "cache-line-size",
&g_cache_line_size);
g_fragments_size = 2 * g_cache_line_size;