diff options
author | Dan Williams <dan.j.williams@intel.com> | 2009-01-06 21:38:15 +0300 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2009-01-06 21:38:15 +0300 |
commit | 33df8ca068123457db56c316946a3c0e4ef787d6 (patch) | |
tree | e594340e903ea3eb8af83906c649eeaf85cbc0b2 /include/linux/dmaengine.h | |
parent | 59b5ec21446b9239d706ab237fb261d525b75e81 (diff) | |
download | linux-33df8ca068123457db56c316946a3c0e4ef787d6.tar.xz |
dmatest: convert to dma_request_channel
Replace the client registration infrastructure with a custom loop to
poll for channels. Once dma_request_channel returns NULL stop asking
for channels. A userspace side effect of this change if that loading
the dmatest module before loading a dma driver will result in no
channels being found, previously dmatest would get a callback. To
facilitate testing in the built-in case dmatest_init is marked as a
late_initcall. Another side effect is that channels under test can not
be used for any other purpose.
Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r-- | include/linux/dmaengine.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index fe40bc020af6..6f2d070ac7f3 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -400,6 +400,12 @@ __dma_cap_set(enum dma_transaction_type tx_type, dma_cap_mask_t *dstp) set_bit(tx_type, dstp->bits); } +#define dma_cap_zero(mask) __dma_cap_zero(&(mask)) +static inline void __dma_cap_zero(dma_cap_mask_t *dstp) +{ + bitmap_zero(dstp->bits, DMA_TX_TYPE_END); +} + #define dma_has_cap(tx, mask) __dma_has_cap((tx), &(mask)) static inline int __dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp) |