diff options
| author | David S. Miller <davem@davemloft.net> | 2015-05-13 14:31:43 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-13 14:31:43 -0400 |
| commit | b04096ff33a977c01c8780ca3ee129dbd641bad4 (patch) | |
| tree | 8652f27f158984e5aa4c00ddf1a4885a32435f28 /arch/arm/mm/dma-mapping.c | |
| parent | 7f460d30c8e130382de1443fdbc4d040a9e062ec (diff) | |
| parent | 110bc76729d448fdbcb5cdb63b83d9fd65ce5e26 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Four minor merge conflicts:
1) qca_spi.c renamed the local variable used for the SPI device
from spi_device to spi, meanwhile the spi_set_drvdata() call
got moved further up in the probe function.
2) Two changes were both adding new members to codel params
structure, and thus we had overlapping changes to the
initializer function.
3) 'net' was making a fix to sk_release_kernel() which is
completely removed in 'net-next'.
4) In net_namespace.c, the rtnl_net_fill() call for GET operations
had the command value fixed, meanwhile 'net-next' adjusted the
argument signature a bit.
This also matches example merge resolutions posted by Stephen
Rothwell over the past two days.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 09c5fe3d30c2..7e7583ddd607 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1878,7 +1878,7 @@ struct dma_map_ops iommu_coherent_ops = { * arm_iommu_attach_device function. */ struct dma_iommu_mapping * -arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size) +arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, u64 size) { unsigned int bits = size >> PAGE_SHIFT; unsigned int bitmap_size = BITS_TO_LONGS(bits) * sizeof(long); @@ -1886,6 +1886,10 @@ arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size) int extensions = 1; int err = -ENOMEM; + /* currently only 32-bit DMA address space is supported */ + if (size > DMA_BIT_MASK(32) + 1) + return ERR_PTR(-ERANGE); + if (!bitmap_size) return ERR_PTR(-EINVAL); @@ -2057,13 +2061,6 @@ static bool arm_setup_iommu_dma_ops(struct device *dev, u64 dma_base, u64 size, if (!iommu) return false; - /* - * currently arm_iommu_create_mapping() takes a max of size_t - * for size param. So check this limit for now. - */ - if (size > SIZE_MAX) - return false; - mapping = arm_iommu_create_mapping(dev->bus, dma_base, size); if (IS_ERR(mapping)) { pr_warn("Failed to create %llu-byte IOMMU mapping for device %s\n", |