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| author |   Timur Tabi <timur@freescale.com> | 2008-09-19 04:16:19 -0700 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2008-09-19 04:16:19 -0700 |
| commit | 6b3141962dc82cfe1c30afdf91d564b309859cbe (patch) | |
| tree | 51a0045ba900f44083fbd2693824414262534dbc /arch/powerpc/sysdev/xilinx_intc.c | |
| parent | drivers/dma/ioat_dma.c: drop code after return (diff) | |
| download | wireguard-linux-6b3141962dc82cfe1c30afdf91d564b309859cbe.tar.xz wireguard-linux-6b3141962dc82cfe1c30afdf91d564b309859cbe.zip | |
dmatest: properly handle duplicate DMA channels
Update the the dmatest driver so that it handles duplicate DMA channels
properly.
When a DMA client is notified of an available DMA channel, it must check if it
has already allocated resources for that channel. If so, it should return
DMA_DUP. This can happen, for example, if a DMA driver calls
dma_async_device_register() more than once.
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch/powerpc/sysdev/xilinx_intc.c')
0 files changed, 0 insertions, 0 deletions