diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/memory/tegra/mc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index 3d8d322511c5..322aa7e8b088 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -5,6 +5,7 @@ #include <linux/clk.h> #include <linux/delay.h> +#include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> @@ -626,6 +627,7 @@ static int tegra_mc_probe(struct platform_device *pdev) struct resource *res; struct tegra_mc *mc; void *isr; + u64 mask; int err; mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL); @@ -637,6 +639,14 @@ static int tegra_mc_probe(struct platform_device *pdev) mc->soc = of_device_get_match_data(&pdev->dev); mc->dev = &pdev->dev; + mask = DMA_BIT_MASK(mc->soc->num_address_bits); + + err = dma_coerce_mask_and_coherent(&pdev->dev, mask); + if (err < 0) { + dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err); + return err; + } + /* length of MC tick in nanoseconds */ mc->tick = 30; |