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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2014-02-18 19:47:17 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-02-21 08:48:27 +0100 |
| commit | 5ec6d4918a45952e99b1b36c93372d79d6927c57 (patch) | |
| tree | dbe20b17bd575cbc14cb1967b954c01686083896 /arch | |
| parent | s390/compat: fix sys_sched_getattr compat wrapper (diff) | |
| download | linux-5ec6d4918a45952e99b1b36c93372d79d6927c57.tar.xz linux-5ec6d4918a45952e99b1b36c93372d79d6927c57.zip | |
s390/pci/dma: use correct segment boundary size
The boundary size for iommu_area_alloc() is currently set to a constant
value. This is wrong, we shouldn't use a constant value but rather the
return value of dma_get_seg_boundary(), since a device driver can override
the default.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/pci/pci_dma.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index 60c11a629d96..f91c03119804 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -206,11 +206,13 @@ static void dma_cleanup_tables(struct zpci_dev *zdev) zdev->dma_table = NULL; } -static unsigned long __dma_alloc_iommu(struct zpci_dev *zdev, unsigned long start, - int size) +static unsigned long __dma_alloc_iommu(struct zpci_dev *zdev, + unsigned long start, int size) { - unsigned long boundary_size = 0x1000000; + unsigned long boundary_size; + boundary_size = ALIGN(dma_get_seg_boundary(&zdev->pdev->dev) + 1, + PAGE_SIZE) >> PAGE_SHIFT; return iommu_area_alloc(zdev->iommu_bitmap, zdev->iommu_pages, start, size, 0, boundary_size, 0); } |