66728eeea6d80060e4b9df55c7845c838ff2799f - arm/linux

commit	66728eeea6d80060e4b9df55c7845c838ff2799f	[log] [tgz]
author	Sebastian Ott <sebott@linux.vnet.ibm.com>	Mon Oct 26 11:19:13 2015 +0100
committer	Martin Schwidefsky <schwidefsky@de.ibm.com>	Mon Nov 09 09:10:49 2015 +0100
tree	a04d86f83e773731272cf299d85069f4a66bc732
parent	4d5a6b72959601d6c12e7e1ef3aa4132f0a62523 [diff]

s390/pci_dma: handle dma table failures

We use lazy allocation for translation table entries but don't handle
allocation (and other) failures during translation table updates.

Handle these failures and undo translation table updates when it's
meaningful.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/pci_dma.h[diff]
arch/s390/pci/pci_dma.c[diff]
drivers/iommu/s390-iommu.c[diff]

3 files changed

tree: a04d86f83e773731272cf299d85069f4a66bc732