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| author | Gaurav Batra <[email protected]> | 2023-05-04 17:59:13 +0000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2023-05-16 14:53:06 +0000 |
| commit | 096339ab84f36beae0b1db25e0ce63fb3873e8b2 (patch) | |
| tree | d5e69697bc080af578672e6d07b2491828c3b87f /drivers/usb/cdns3/cdns3-gadget.c | |
| parent | powerpc/iommu: Remove iommu_del_device() (diff) | |
| download | kernel-096339ab84f36beae0b1db25e0ce63fb3873e8b2.tar.gz kernel-096339ab84f36beae0b1db25e0ce63fb3873e8b2.zip | |
powerpc/iommu: DMA address offset is incorrectly calculated with 2MB TCEs
When DMA window is backed by 2MB TCEs, the DMA address for the mapped
page should be the offset of the page relative to the 2MB TCE. The code
was incorrectly setting the DMA address to the beginning of the TCE
range.
Mellanox driver is reporting timeout trying to ENABLE_HCA for an SR-IOV
ethernet port, when DMA window is backed by 2MB TCEs.
Fixes: 387273118714 ("powerps/pseries/dma: Add support for 2M IOMMU page size")
Cc: [email protected] # v5.16+
Signed-off-by: Gaurav Batra <[email protected]>
Reviewed-by: Greg Joyce <[email protected]>
Reviewed-by: Brian King <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://msgid.link/[email protected]
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.c')
0 files changed, 0 insertions, 0 deletions