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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2012-12-05 15:06:01 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-12-05 11:05:05 -0500 |
| commit | 9163003236a52fd1a8ee6ca8a04f7232d001fc98 (patch) | |
| tree | 6503140010f2e811e0bf9bfea3a2e569af07107e /arch/s390 | |
| parent | c59b9f92653f102856ca7802af551788c143a3a3 (diff) | |
| download | linux-9163003236a52fd1a8ee6ca8a04f7232d001fc98.tar.gz linux-9163003236a52fd1a8ee6ca8a04f7232d001fc98.tar.bz2 linux-9163003236a52fd1a8ee6ca8a04f7232d001fc98.zip | |
s390/pci: enable NEED_DMA_MAP_STATE
The DMA API allows to avoid DMA unmaps because they are NOPs on some
plattforms. But not on s390, so force them.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f39a6f54c353..7ea06bee8b30 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -479,6 +479,9 @@ config NEED_SG_DMA_LENGTH config HAVE_DMA_ATTRS def_bool PCI +config NEED_DMA_MAP_STATE + def_bool PCI + config CHSC_SCH def_tristate m prompt "Support for CHSC subchannels" |