diff options
| author |   Robin Murphy <robin.murphy@arm.com> | 2018-07-23 23:16:08 +0100 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2018-07-27 19:01:05 +0200 |
| commit | d74ea7100b0d065f2008c4e1ddf637483bc3d28c (patch) | |
| tree | 0d681f589861c7ef32b39abe0394f8d1b1e06855 /drivers/acpi | |
| parent | dma-mapping: Generalise dma_32bit_limit flag (diff) | |
| download | linux-dev-d74ea7100b0d065f2008c4e1ddf637483bc3d28c.tar.xz linux-dev-d74ea7100b0d065f2008c4e1ddf637483bc3d28c.zip | |
ACPI/IORT: Set bus DMA mask as appropriate
When an explicit DMA limit is described by firmware, we need to remember
it regardless of how drivers might subsequently update their devices'
masks. The new bus_dma_mask field does that.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 4a66896e2aa3..bc51cff5505e 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1014,6 +1014,7 @@ void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *dma_size) * Limit coherent and dma mask based on size * retrieved from firmware. */ + dev->bus_dma_mask = mask; dev->coherent_dma_mask = mask; *dev->dma_mask = mask; } |